Dear Stackers, I have two 1/4oz gold coins given to me years back, dated 1995 and 1999. I presume they are bullions with no COA or box. They come in square plastic capsule and are inscribed "Australian Gold Nugget". Not knowing their origin, my question is if they were minted by Perth Mint and with the series subsequently being renamed to become today's "Australian Gold Kangaroo". 1995 1/4oz Australian Gold Nugget 1999 1/4oz Australian Gold Nugget The 1999 coin has a mint mark "P100". Anyone knows what does that mean? Also, I would like to know if they carry a premium, and if their value do appreciate over time? Thanks. Regards, Revlisify