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Collom's Ore Washing Machine Antique Mine Engineering Print 1870
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John Collom's Patent Ore Washing Machine
Issued 1870 Engineering Department US Army
In VG condition or better age toning well worthy of hanging for display.
sheet measures approx 8 3/4 x 11 1/2
Issued 1870 Engineering Department US Army
In VG condition or better age toning well worthy of hanging for display.
sheet measures approx 8 3/4 x 11 1/2
