SG219 1902 1d. Striking book piece inscribed "vol.23/ 20 leads", a special plate of 20 for the colour trials?

SG219 1902 1d. Striking book piece inscribed "vol.23/ 20 leads", a special plate of 20 for the colour trials?
Stock Number: 320319
Availability: In Stock
Catalogue Number: 130
SG Number: SG219
Price: £1,500.00
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SG219 1902 1d. Striking book piece inscribed "vol.23/ 20 leads", a special plate of 20 for the colour trials?

Fresh and fine. Scarce.