What other coins/medals besides the 79 Year of Child Matte and 82 1 oz gold pandas were restruck in later years? Is there a list?........
There are other coins, like historical figures and invention/discovery that were minted years after original year of issue, but all future minting was within the stated mintage on the COA, assuming COA was official. If the COA was produced by distributor then it is anyone's guess how many were produced. I don't have a list, just know about it from conversations with dealers over the years.
I don't know the current rules for each of the mints on when is the latest a coin can be produced after the initial run to full fill the COA limit. For private mints I assume the rules are more relaxed. This why medals have always been a collecting item for me and never an investment, I just don't like owning something that could have a hoard released into the market, because the original distributor needs to raise money fast or dies and bunch of coins hit the market. I have seen many hoards get dumped at cheap prices over the years. Even old medals from 1980s are locked up in hoards. While gold pandas may still be locked up in hoards, the reality is the market demand is so high that moving 10-20 pieces of the same coin is easy, not so with medals, you may be able to sell on 1-4 quickly, but rest you are stuck with for years, even worse if they grade PF68 or lower, there is no liquidity for them unless price is close to melt.
Bottomline official medals should be collected for fun with little focus on making money. The private mint medals collect them as souvenirs they will probably lose value as nicer ones will come out at lower mintage to trap unsuspecting investors of their potential value.