Here are two medals ... 1 as of certificate made of 999 silver 1 t.oz. Model pattern 1 yen. another is some korean coin How much would they cost?
The one on the left/top is the same design as the very first modern silver coin minted in Japan. The legends are "Dai Ni Hon" ("Great Japan") at the top between two dots (upside down in the picture, reading right to left); "Meiji San Nen" ("Year 3 of the Meiji Era" - 1870) (reading right to left at the bottom); and "Ichi En" ("One Yen") at the left. The Krause designation is Y#5.1. There are three varieties of that .900 silver, 38.58mm coin, with slight differences in calligraphy of the yen symbol. In the Japanese equivalent of MS they are valued at between 150,000 and 600,000 Yen (~$1,910.00-$7,640 at current exchange rates) in the 2012 Japanese Numismatic Dealers Association catalog. The COA seems to indicate that yours is a product of a former branch of the British Royal Mint. The original Japanese mint at Osaka was set up by British experts with machinery imported from Britain, so it is possible that at one time the BRM considered Osaka to have been a branch. The COA also appears to refer to the coin as a pattern, struck in .999 silver. Although the pictured obverse clearly resembles the actual coin, without a significant enlargement of that picture and a picture of the reverse it can't be accurately analyzed. If genuinely what it claims to be, to the right collector, your coin and its COA might be worth substantially more than an Osaka coin. Your second coin, except for the "Half Dollar" legend, is quite similar to an early 19th Century Korean 1 Chon. It is dated Kuang Mu 3 (1899) at the top, marked "Ta Han" ("Great Korea") at the left, and has a denomination at the right, which I cannot read. So far as I know, there are no Korean coins of that vintage denominated in English - at least not in any of my reference books. "Dollar" has never been a Korean denomination. In 1899 Korean denominations were "Fun", "Yang" and "Whan". Since I can't read the information on the case lid, I am totally unable to determine what you have, or to place a value on it. I've asked an expert on Korean coins from another forum to take a look at it.
Well, I have now learned that there was an 1899 test of a new half-won denomination, with the English translation of "One Dollar", and that your coin appears to be a reproduction of that item. Krause does not list the item in its notation of pattern coins. As a Japanese Protectorate Korea actually adopted the "won" denomination in Kuang Mu 9 (1905) when it issued an .800 silver 1/2 won with a completely different obverse (very similar to a contemporary Japanese silver yen), and an English inscription of "Half Won". Except to a rare collector of Korean varieties and reproductions, I would estimate your coin to be worth its bullion melt value.
Hontonai, Thank you. As far as I understand from the certificate these are just medals that were made recently in order to show the pattern for those coins. SO, looks like the bullion value plus some small premium would be just it for these two medals.
