It's definitely one of the anonymous token issues from Mysore, the assignment to a specific date range is kind of baseless for the elephant kasu. The original coin above at the start of the post is a one kasu based on the size (usually about 12 mm), I have a few of these with the numeral/pattern design. Could be either KM A13 or A15, the mark above the elephant is the only differentiation between the two numbers (see KM South Asia p. 106-107).