These extinguishers are my small antiques.

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Vintage Randolph 2 CO2 extinguisher
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2 3/4 pound dry chemical. Label reads"City of Calgary no 72691"
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General 2 3/4 pound dry chemical. Agent is blue
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Red Cap Super-6 2 1/2 pound extinguisher
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Vintage Ansul. The cylinder was disposable, the head reusable