Back Of My Sc#2905

All,

Good evening! I've found a SC#2905 at the local stamp shop, and when picking through them I opted on choosing this one, as it was the only one with a printed '380' on the back . It looks like it was machined - not done by an 'owner'. If anyone has any information on this marking, I'd appreciate it!





Thanks all!

Cardinal Bass
(BTW - after 100 quality posts, I can fix my signature to say U.S., not Uganda...)

It is a back number applied only to coil stamps by USPS. Bulk mailers buy very large coil rolls (up to 10,000 stamps per roll) The back number, for one thing, helps the mail room people calculate how many stamps are remaining on the rolls.

Thanks quigngt! You learn something new every day. A little gem of wisdom I can tuck under my belt.

Joining this forum has been a great accelerator in my new passion!

Cardinal Bass