Part of a series of six designs ...
'For your consideration is a stunning SOLID SILVER STAMP, in rare MINT condition, based on the original issued within the UNITED STATES of AMERICA during c1845. This beautifully crafted "20-CENT ST LOUIS BEAR", exacted to the finest exquisite detail and measuring 11mm x 9mm, is one of the greatest stamps of the world and a wonderful collectors item or gift for a STAMP or SILVER enthusiast. The "St Louis Bear" stamps were engraved in a plate of
six subjects. The need for 20-cent stamps led to a re-engraving of the plate. The denominations on two of the five-cent stamps were obliterated, and the 20-cent value was then engraved by hand. In 1983, the catalogue value for a used 20-cent bear on greenish paper was $9000, while one on lilac-grey paper is valued at $9500.
The stamp weighs between 1-2 grammes and is shown next to a £1 coin for an idea of scale.'
http://picclick.co.uk/SOLID-SILVER-STAMP-USA-1845-20-CENT-ST-LOUIS-282191237619.html