From what I have been able to gather, and this is a pet collecting area of mine as many know, the last contract for actual coins struck by the Franklin Mint was for the Cook Islands in 1997. It was a larger silver crown (50??Dollars) and smaller gold version of "Greats" of the Centuries. I kind of like the Constantine and Justinian coins but don't see a value of 125 USD for them. There are what appear to be 1994 and 1988 coins from the Cook Islands as well, and all of these years have the FM logo/mintmark on them. Some years ago I got the 1995 Papua New Guinea 100 Kina proof coin with a very nice Bird of Paradise reverse. I sort of count this as the last FM issue because the FM had struck coins of both collector and circulati9ng varieties since 1975 whereas the Cook Island coins were for a simple contract for collector issues & the pretense of striking coins for circulation to "legitimize" the collector silver and lesser metal coins stuck in proof. I will try to post some pictures later this evening if possible and welcome any contributions from readers as I always like to learn. By the way, the last contract for circulating coins, and not just specimen packaged uncirculated coins I believe were the Jamaica 1984 20c, 25c and 50c coins. The last large contract for circulating coins I believe was that for Liberia 1983 & 1984 1c, 5c and 10c. Somehow even though it was a large contract the coins are not found often in circulated condition. I think this may have something to do with the political instability there in Liberia (to put it mildly).
The Wiki article on the FM was a little strange. FM still has a website and is still in business. The Franklin Mint still exists and is currently owned by Retail Ecommerce Ventures (REV). While they no longer operate physical retail stores, the brand continues to sell coins, commemorative medals, jewelry, and collectibles online. You can browse their current inventory on the official Franklin Mint store. As for minting coins, IDK if they stopped, but their stuff was not for circulation anyway. Except: However, in the 1970s and 1980s, the company was contracted to manufacture legal tender coins for several foreign countries, such as Panama and Jamaica. While these were official currency, they were aimed at collectors rather than everyday circulation.
All I know about Franklin Mint is they didn't date some of their medals and they started using new mintmark, good question though! https://en.numista.com/forum/topic124872.html