Hi again. Still sorting through GF's collection and thought I'd share a few scans. The postage due stamps are stamped by Narbeth Pa., but the gum on the back says they are unused. (sorry if the scan doesn't show this) Was it common to pre stamp them? Thanks.
Found the shermack with a bunch of stamps that I'm guessing he was going to catalog somewhere but had a heart attack and died before he could.