I acquired this specimen recently.
This is a Franklin Mint issue from The World’s Most Valuable Stamps set. Replica stamps in sterling silver and colorized was first issued in 1986. A total of 25 stamps are in the set.
Mint in Package (MIP). I’m an advocate to collecting MIP Franklin Mint items (kept in pristine condition).
1- 3/16 inch X 7/8 inch in sterling silver.
Unlisted in 1991 Hawaiian Money 2nd Edition by Medcalf & Russell.
This ingot was cataloged as FMI-PS03 in the latest update to my book https://www.createspace.com/5281076 An specimen is on the book cover.
FMI = Franklin Mint Ingot
PS = Postage Stamp
03 = Type 3 in the series of 5 types of FMI-PS