Eley cap tins for the Thuer cartridges

I’m fairly certain these cap tins are for reloading Thuer cartridges. The tiny caps measure 0.128” to 0.130” in diameter by 0.147” to 0.152” long.

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I am of the opinion they are not, but are for shotgun shells.

Colt Thuer’s conversion primers are marked for Colts.