Hi, this is a bit of a tricky one. Need some keen eyes more than anything, or someone that may have seen something like this stamped on the bottom of a Raleigh serial (on the BB).
I know it's from 1974-1980's (starts with WC), but I love the actual date number. It looks like the number has a K planted sideways across it.
My best guess is a 7 that has been kind of half stamped. Any ideas?