Originally Posted by
brettbaugh
I just picked up an old Brooks saddle at a local bike shop for $15. It is definitely vintage and in great shape. The only identifier is like yours a three digit marking on the underside of the seat leather. Mine is stamped “0D8” (zero, D, 8). You mentioned that maybe the letter is the month. I recently looked up a Schwinn beach cruiser serial number and the only Letter in the serial number was a “K” which represented October per the serial number registry site I visited. So maybe my seat is April 78?? Who knows.
It's a fine seat.
Time passes--mine has been retired, together with the seat sandwich that enables mounting the B66 on a more modern bike.