That's interesting. Did it change inside the capsule? Has it been in your possession since 02? I've got some 2012 5oz libs I bought a few months back. They came in a mint tube. I put them in capsules. Some had what looked like faint milk spots but have since turned to brown spots.
Thought this thread could use a bump. here's a 1973 1 oz Trade Unit with nice purple toning that I picked up a while ago.
Well I finally got my first toned coin in, came with 6 other untoned coins from a yardsale WW1 era. Photo was taken in sun light as the tones show up abit better.
Finally a good thread for my spamera. Here are my favorites. JM Liberty Trade Silver round with the word LIBERTY in 19 languages/colors. Special lightning effect right of statue. Toxic libertads. Sphinx in its natural color. 1980 HK 10c Bimetallic (Someone cleaned pretty much the center only )
austrian thaler most widely used coin in that time ; europe asia and africa the gal is maria theresa; when the coin was encountered it was minted in countries not controlled by Austria just because they thought it was so cool