I have a great deal of difficulty reading Thai dates, but the odds are very high that we are looking at KM#83, a 1 baht cu-ni coin dated BE2505 (1962), which is one of the most common coins ever mnted. 883,066,000 were produced from 1962-82 with the same date! 35th Ed. Krause catalog says 15¢ XF or 50¢ Unc., but they can often be found in dealers' 2-for-a-quarter bowls. Edited: Gotta learn to type faster!
Don't worry about your typing speed, you got your reply in just under the deadline. Seriously, thanks guys! Hontonai, wasn't planning on retiring on this, but appreciate that detail!