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1858 1d Pink Envelope to Leamington, superbly cancelled with the experimental Kingstown '289' duplex dated NO.27.58.
The famous Irish 'Trollope' as it is known. ..
£125.00
1859 Stationery. 1d. Pink envelope. Fine used example, cancelled by the Kingston experimental duplex.
Trollope type KINGSTON / 289, duplex code D. Addressed to Bellaghy with Dublin and Castledawson b..
£160.00
1871 Experimental Machine cancel. Stationery.
AZEMAR "89" in oval - from the second trial on postcards only - in use 4th January to 4th Februar..
£1,350.00
1912 Wilkinson Experimental Slot Machine. Cover to Catford with a neat impressed LONDON E.C/ POSTAGE PAID in magenta.
Red double ring cds for FE.14.12. Scarce.  ..
SG Number: SG321
£210.00
1922 1d. Pale Scarlet. S.House Experimental Printing. (very course impression)
Fine used example on postcard from Torquay, dated 27/08/25. Rarely seen used. Spec N17A.  ..
SG Number: SGN17A
£550.00
BICKERDIKE Experimental Machine Cancellation “E Crown R” with number beneath Crown.
London Assurance envelope sent to BLACKHEATH re-directed to MALVERN… cancelled for SEP. 30.01. by..
£125.00
c.1859 1d. Pink Envelope. SALISBURY "683" experimental handstamp.
Unaddressed "Official "trial" without pins... these were removed when it was found the envelope &..
£975.00
c.1861 De La Rue Experimental Postage - Three Pence, Essay's with the head of King Pedro V of Portugal, from the defaced plate.
In carmine, green and purple. Unusual Dummy. (Faults). ..
£295.00
c.1920 Merkham Trading Co. Ltd. Experimental Coil Stamp.
Unmounted o.g. strip of four with coil join. The 'Multipost' coil which was intended to be contai..
£75.00
SG034 1855 2d. Blue Pl.5 (BB). LC. P.14. LIVERPOOL experimental dotted circle or "pin" cancellation dated JN. 28. 1856.
Hinged to piece with the remainder of the cancel hand drawn. ..
SG Number: SG34
£150.00
SG040 1857 1d. Rose-red.(IL).Die II. LC. P.14. Spec C10. PEARSON HILL EXPERIMENTAL TRIAL.
Dated 22.JA.58. Only used 21.9.57 to 17.2.58. Scarce so fine. ..
SG Number: SG40
£175.00
SG043/44 - 1864 1d. Rose-red.(OJ-OK). Azemar Experimental Machine.
Super entire addressed to ABERDEEN dated AP.10.69, code Y1. Attractive. ..
SG Number: SG43
Plate No.: 106
£750.00
SG045 - 1858 2d. Blue (IB & SL). Thick Lines. Charles Rideout Experimental Machine Duplex.
Good clear strikes of the “1” and “2” numerals from the 1858 – 59 machine cancellation trials. Ni..
SG Number: 45
Plate No.: 7
£95.00
SG122a 1872 6d. Chestnut Pl.11 (IG). Salisbury “683” Experimental Handstamp - Without Pins.
Very Fine Example… The Experimental Pins Were Removed When It Was Found The Envelope & Conten..
SG Number: SG122a
Plate No.: 11
£210.00
SG17/ 42 1857 Double rate cover to Redditch, cancelled with the rare Birmingham 75 experimental roller cancel.
Dated 7.Dec.1857. A short lived experiment.  ..
SG Number: SG17
£550.00
SG17/ 42 Edinburgh experimental Roller Cancellations Type I & Type II.
Edinburgh had two roller cancellations based on the Scottish number of the 1844 obliterators. One..
SG Number: SG42
£150.00
SG172 1899. Experimental Registered envelopes, one used, one mint with precise instructions on how to use - addressed to Major Evans.
Not seen before! Rare.  ..
SG Number: SG172
£500.00
SG2 1840 1d. Black plate 7, SA. Used in London, placed unusually at the left hand side and cancelled by a black experimental maltese cross.
Alongside is the TP TOTTENHAM CT. RD in red. Dated DE.24.40. Attractive.  ..
SG Number: SG2
Plate No.: 7
£295.00
SG2 1840 1d. Black plate 9, GL. Experimental thin paper. Superb used. SpecAS56fza. Cat. £1800+.
Neat 1844 numeral 387 of Huddersfield.  ..
SG Number: SG2
Plate No.: 9
£575.00
SG29 1855 1d. Red-brown (QG). Die II. LC. P.14. BLUE Handstamp - Experimental KILMARNOCK Duplex.
A fine strike showing the “203” numeral part of the very scarce experimental handstamp in blue in..
SG Number: SG29
£125.00
SG29 1855 1d. Red-brown (QH). Die II. LC. P.14. Experimental EDINBURGH Duplex - Vertical Format.
A fine strike in blue ink showing the numeral section and the top of the datestamp. Perfs trimmed..
SG Number: SG29
Plate No.: 38
£150.00
SG327 1911 1d. Carmine-red. Die 1A. Paper Trial. Experimental Chalk Surface Paper. Without WMK.
Very fine unmounted o.g. top marginal example. ..
SG Number: SG327
£250.00
SG34 1858 2d. Blue LC14 pl. 5 (IB) on cover to Ashburton, neatly cancelled by the Exeter Creswell experimental duplex dated JA.11.58.
Unusual to see on the 2d value. ..
SG Number: sg34
£165.00
SG35 1857 2d. Deep Blue Pl.6 (EI). PEARSON HILL Experimental Machine Cancellation.
Exceptionally fine uncreased entire addressed to MACCLESFIELD with a lovely impression of the rar..
SG Number: SG35
£1,350.00
SG357 1913 1d. Bright-scarlet. Royal Cypher. Somerset House experimental Coil Printing.
PLATE PROOF. Imperforate horizontal pair on ungummed paper without watermark accompanied with a copy..
SG Number: SG357
£1,375.00
SG357var 1922 1d. Pale scarlet Somerset House Experimental Printing, ex coil. An unmounted, original gum with good perfs.
Fine partial offset on reverse. A rare stamp. Spec N17A. Cat. £875. ..
SG Number: SG357var
£575.00
SG357var 1922 1d. Pale Scarlet. Somerset House experimental Coil Printing. "SPECIMEN" Type 30.
Unmounted o.g vertical pair of this rare stamp N17As. (29.301). Cat £1900++. ..
SG Number: SG357
£1,100.00
SG398var 1922 1d. Pale scarlet, watermark Simple Cypher, Somerset House experimental printing.
Fine mounted mint, original gum example, with good perfs. Scarce stamp. Spec N17A, cat. £525. Rar..
SG Number: SG398var
£295.00
SG398var 1922 1d. Pale scarlet, watermark Simple Cypher. Somerset House experimental printing.
Fine mounted mint, original gum example. Partial offset on reverse. Scarce stamp with good perfs...
SG Number: SG398var
£295.00
SG40 1857 1d. Rose-red (FD). Die II. LC. P.14. Charles Rideout Experimental Machine Cancellation.
Very neat envelope addressed to DERBY with fine impression of the trial cancellation for MA. 31. ..
SG Number: SG40
£95.00
SG40 1857 1d. Rose-red (GH). Die II. LC. P.14. PEARSON HILL Experimental Machine Cancellation – 2nd. Type, Code A.
Fine strike of the trial cancellation for JA. 2. 58.  ..
SG Number: SG40
£45.00
SG40 1857 1d. Rose-red (NE). PEARSON HILL Experimental Machine Cancellation.
Very fine entire addressed to RYE, SUSSEX… good, clear impression of the code “A” trial cancellat..
SG Number: SG40
£475.00
SG40 1857 1d. Rose-red (NJ). Die II. LC. P.14. PEARSON HILL Experimental Machine Cancellation – 2nd. Type, Code A.
Fine strike of the trial cancellation for DE. 5. 57.  ..
SG Number: SG40
£50.00
SG40 1857 1d. Rose-red (RH). Die II. LC. P.14. Pearson Hill Experimental Machine Cancel. Code “A”.
Extremely fine strike of the trial cancellation tying stamp to piece with a superb off-set from t..
SG Number: SG40
£175.00
SG40 1857 1d. Rose-red Pl.55 (MJ). PEARSON HILL “Opera Glasses” Experimental Machine Cancellation.
A superb half strike dated MR. 30. 58. Delightful.  ..
SG Number: SG40
Plate No.: 55
£175.00
SG41 & 45 1857 1d. Deep Rose-red (SH). and 1859 2d. Blue Pl.8 (DG). CHARLES RIDEOUT Experimental Machine Duplex.
Excellent clear impressions of the “1” and “2” trial cancellations used on wrapper sent to LICHFI..
SG Number: SG41
£350.00
SG41 1857 1d. Deep Rose-red (NF). Die II. LC. P.14. PEARSON HILL Experimental Machine Cancellation – Code “A”.
Excellent strike on envelope to FAIRFORD, GLOUCESTERSHIRE dated NO. 2. 57. Reverse with blue arri..
SG Number: SG41
£450.00
SG419b & 420e 1924 1d. Scarlet and 1½d. Red-brown. Wmk. Block Cypher – EXPERIMENTAL PAPER.
Unused o.g. “B 24” control examples… very scarce with control numbers.   ..
SG Number: SG420e
£695.00
SG419b 1924 1d. Scarlet. Wmk. Block Cypher – Experimental Paper.
Top right corner block of nine – row two with marginal scoop plate marking. Cat. £360.  ..
SG Number: SG419b
£180.00
SG419b 1924 1d. Scarlet. Wmk. Block Cypher – Experimental Paper. Superb u/m “B 24” control.
..
SG Number: SG419b
£200.00
SG42 1862 1d. Rose-red Experimental Corner letters, pl. 51, GD. On superb cover Dublin to London.
Stamp placed bottom left with a complete 186 duplex at top right. A super cover!  ..
SG Number: SG42
Plate No.: 51
£120.00
SG420 fWi.1924 1½d. Red-brown. Experimental Paper- WMK Inverted. 'D 25' example.
Type 11a(Concise cat). Very rare. Spec N35b. Unpriced by SG. RPS Cert. ..
SG Number: SG420
£750.00
SG420b - 1924 1½d. Red-brown. Block Cypher. Experimental paper.
Waterlow printing. Superb D25 control block of six, lower strip unmounted. A scarce multiple. ..
SG Number: SG420
£650.00
SG420g 1925 1 1/2d. Red-brown Experimental Paper. Very fine, lightly mounted D25 control example.
Rare. Cat. £400.  ..
SG Number: SG420g
£250.00
SG43 1866 1d. Rose-red pl.81 neatly tied on cover to Launceston by a very fine strike of the Creswell Experimental duplex of EXETER.
Dated NO.2.66. A pretty cover. ..
SG Number: SG43
Plate No.: 81
£85.00
SG43 1871 Azemar Experimental Duplex Cancellation 1d. Rose red, pl. 118 on printed entire to Derby dd. 31.Aug.1871.
Used during the second trial period with sections 1-2-4-5. Neat. ..
SG Number: SG43
Plate No.: 118
£125.00
SG43 1872 Azemar Experimental Duplex Cancellation 1d. Rose-red pl.124 on cover to Stranraer.
Final trial period dated 14.JU.72 using segments 1-2-3-3.  ..
SG Number: SG43
Plate No.: 124
£135.00
SG503 1951 ½d. Pale Orange. Rare 1952 experimental coil used in vending machines in exposed locations.
Coil Leader printed in black on buff inscribed "(EXP) 240 ½d. STAMPS/DELIVERY LOWER END FIRST/Pri..
SG Number: SG503
£275.00
SG58 1857 6d. Embossed, touched/ in at base. Cancelled with the rare Birmingham "75" experimental roller cancel - a short lived experiment.
..
SG Number: SG58
£195.00
SG93 1870 4d. Dull Vermilion (FD).  SALISBURY “683” Experimental Handstamp with Pins.
Very fine well struck example of the “683/E” handstamp with the pins – later removed as it was fo..
SG Number: SG93
Plate No.: 12
£150.00
SG94 1869 4d. Vermilion (LD). Wmk. Large Garter. SALISBURY “683” Experimental Handstamp without Pins.
A good example of handstamp with the pins removed - it was found the envelope & contents as w..
SG Number: SG94
Plate No.: 11
£40.00
SGD14 1924 3d. Dull violet EXPERIMENTAL PAPER - Very fine, lightly used horizontal block of 6 - rare.
(With normal block) Cat. £570 as singles) ..
SG Number: SGD14
£395.00
SGD14b 1924 3d. Violet experimental paper. Fine used marginal block. Scarce.
Cat £380 as singles.  ..
SG Number: SGD14b
£225.00
SGD14b 1925 3d. Dull violet Experimental paper. Superb D25 control example, u/m. Scarce.
..
SG Number: SGD14b
£225.00
SGME1 1840 1d. Mulready Letter Sheet. Stereo “A 23”. Forme 2. Black Maltese Cross - Experimental Period.
Sent locally in LONDON to Islington with a bold strike of the black MC and “T P/Oxford ST.W.O” be..
SG Number: SGME1f
£400.00
SGME1 1d.Mulready Lettersheet. Superb black MC used during the experimental period of black ink in London.
Officially introduced on 10th Feb 1841. Dated October 3rd 1840. ..
£550.00
SGME1. 1d. Mulready Letter Sheet. Experimental period in London of the black MC. Local use dated Oct.5.1840.
Black cross officially introduced on 10 Feb 1841. ..
£325.00