SG434/ 437 1929 PUC plain cards embossed with UPU motif.

SG434/ 437 1929 PUC plain cards embossed with UPU motif.
Stock Number: 314732
Availability: In Stock
Catalogue Number: 309
SG Number: SG437
Price: £695.00
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SG434/ 437 1929 PUC plain cards embossed with UPU motif.

Each with a different cachet at the left! Proof status?