Japan 5 Yen Date

The date is Showa 50th year which would make it 1975.

erm.... yeah.... It's multiplication and addition. Multiply the "adjective" number with decimal number and add it to whatever else.

or.... post it here and someone will answer it for you!

David, I've got to totally agree that any question I've ever asked around here has been answered. It's a great group of people willing to help out those of us new to this addictive activity. :)
Appreciate the link schmidty, it's a great site. It does a better job of explaining the numbering system used, this one line was missing from the site I originally used.

2 - The characters for the number of years since the era started. This can be one, two, or three characters. One character would be a simple number from one to ten (or the character 'gan' meaning 'first'). Two characters would be a number of years from 11 to 19 (e.g. 10+1 thru' 10+9) or '20', '30', '40' etc. (e.g. (2 x 10), (3 x 10), (4 x 10) etc. Three characters would be any number from 21 (2 x 10 + 1) onwards (except for whole 'tens' e.g. '30', '40', etc.)