found this sorting while uploading to omni coin... a toned chinese cash.
dunno how... but this silver nickel i got the other day has toned yellow and black.. the balck makes the condition look owrse then it is, but still interesting colour
yea i have 1922 and 1924 50 kopecks begginning to tone, the 1922 looks more dirty at the top rather then toning currently, but it is toning (has some nice colours popping up, i'll get a picture soon)
hopefully today or tomorrow 24 10 russian kopecks from CCCP era (most 70-80-90's but a few early pieces good for a date run on the laters)
but inside this lot are
1932
1936 (looks rather good from picture, lustre)
1956
and 1967 50th anniversary
these earlier russians are hard to come by