Tinned .45-70 Government Cases

[Grapeshot]

OK, going through the brass pile at my range I came across this OLD .45-70 case.  The round had not been fired, but the bullet had been removed/pulled and the Black Powder charge had been dug out.  I say this because there were still BP residue clinging to the insides of the case.  The Primer also appears to be unfired and tinned as well, and it is a Balloon headed Case.

The head stamp is as follows from 12:00 clock wise:  F, 9, 2.  My knowledge on military head stamps tells me this may be for (F) Frankfort Arsenal, (9) September, (2) 1892.

Anyone out there have another take on this code?

[pony express]

Sounds reasonable. I had read that 30-40 ammo at that time was tinned, didn't know that 45-70 also was.

[Drydock]

Frankford Arsenal used tinned cases for most of its brass cased .45-70 ammo after 1888, and pre ww1 Krag as well.  However, it used a 2 number date for the year until the turn of the century.  My take here is (F)rankford, (9)September, 190(2).

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[Grapeshot]

Drydock, your input is in fact the more likely solution to the headstamp code.  Thanks.