This one has been bothering me for a long, long time. What is the number on this stamp? At first glance, it seems legible enough, but the harder I look the more perplexed I seem to get. Can anyone help?
Thanks for the suggestion, Cjd. Personally, I can't see '3's there, but it is a more viable construction that my own (1221), because this number was no longer being used at the time this particular stamp was issued.