[quote name='Bloodaxe' timestamp='1423936646' post='2690617']
Yup - a Series 1. The thinking on the dating-by-serial sketch has changed in the last year or so... It used to be that first digit = year, but it's got a bit more complicated as it looks like they changed the system in 1980. The new interpretation runs like this:
Pre 1980 — MM-Y-NNN, where MM is the month (05 = May, 11 = Nov etc.), Y = Year (either 7, 8 or 9) and NNN = the production number for that month (not necessarily restricted to SBs)
1980 7 beyond — Y-MM-NNN(N), where it goes Year/Month/Prod. This should apply to Clarky's. At some point the production number went from 3 to 4 digits.
[/quote]
Thanks for the info. I've not seen it for some time but I'm pretty sure mine is pre-80 but with a 00 serial number. I should get it back soon