Thanks!WM23H9 would be a 1969 Super Bee hardtop.
Here's a thread with links to sites that have decoding software. Fender tag apps. How to decode your fender tagHi guys…. This is only picture Ive attained so far, of a “superbee” im going to look at…. really appreciate if it is legible enough for someone decode…. I have no idea how to tell if real Superbee, or just a Coronet…View attachment 1614404
As is the E63 code as well.H is a 383