In 1994 Brunei issued a $100 white gold coin, KM# 62 for their 10th Ann. of their Independence. Other countries have also issued white gold coins, but I can't recall which ones at this time.
Actually the term white gold is quite vague. It can be alloys of gold+silver, gold+palladium, gold+platinum and other precious metals. What exactly are you looking for ND86? I know there are some that are minted in gold+silver alloys but not with any others, other than gold+copper but that's not white gold.
My understanding is the same as gxseries'. Gold alloyed with a precious or semi-precious metal to change the color from yellow to white. I have definitely read of palladium being used for this purpose.
There's very few countries that have ever issued medal-coins using palladium in its pure form.The first to do so was Tonga.Aussie has had some,& the Hutt River Province Principality issued a palladium $100 back in 1989. Aidan.
"Any thoughts or opinions on what the US Mint should do given the above?" Yeah, stay with making coins. :rolling:
One of the problems that faced ALL countries that minted palladium coins is with the issue of face value. What exactly are you supposed to give it? Canada and China both gave 50 dollars / yuan for an ounce of palladium, whereas Russia just gave it a miserable 25 for an ounce. France if I remember right gave 100F for 12.x grams of palladium. It maybe possible that US will mint palladium coins, afterall the Watercreek minted some palladium bullion although I am not too sure how hot it was. White gold itself is extremely absurd and although it maybe prove to be sellable, I honestly think it just makes the numismatic industry painfully difficult to deal with. I don't believe there is a standard of the percentage alloy of gold versus other precious metals, as well as the type of combination. How much is too little too much? 750 platinum, 250 gold? 800 platinum 200 gold? etc. Prices DO differ! As well as how exactly can one calculate how much their bullion content is worth? 1.555 grams of palladium, 3.111 grams of gold in this coin etc just makes it difficult to calculate as well as the overall weight of the final coin size is not really standard size. You aren't going to tell me that you are going to dump the data on spreadsheet and work out it's worth? Industry wise, I don't really believe white gold has many uses except for jewellery since it just looks "nice" or trying to have unique color from other people.