F-mezzo oddity!

Took what I am nearly certain are original pads out of a Conn F-mezzo today for overhaul and the serial under the G# does not match the serial on the body! Felts and corks and everything were correct and matched the original setups I have seen on these in the past. I have done a weirdly high amount of F-mezzo overhauls, but I have never seen this before. Neither serial was on Peter Hurd’s “rare saxophone registry” but is now.

Body serial is 213874, G# serial is 213808.