star tags?

[mojjax]

I found these in an old barn .I was wondering what they are for ?
mojjax

 

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[PBK]

Probably tags from boxes containing propellant for Navy 5" guns. "Ready-service" refers to ammo stowage in the immediate vicinity of the weapon.

 

[Angelo]

Check this item on ebay. Perhaps, seller can provide information on where the tags were placed.

PBK probably hit it on the nose.