I travel a lot for business, so I always try and visit gun stores to see if they have anything for my collection.

Came across these today.  First time I have ever seen them anywhere.

Anybody here know anything about when they were made or used?

1 box, 20 Cartridges, Blank, Caliber 30 (1898) M3 made by Remington Arms Company.

The box has never been opened.  There are faint traces of a lot number, but they are hard to make out.  It looks like lot number 5237.

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