Thanks to you both for looking at it. I guess it shall remain a mystery for now. My trip through Richard's produced similar result - haystacks. Searching "25¢ uc" brought back 4 pages with no match and "25¢ cu" brought 14 pages with, again, nothing. Switching the value and letters didn't change anything. I guess I'll back-burner this one for now and jump on the 35-40 world coins I have without a stroke of English lettering. Thanks, again!