NOS ?  Mopar dodge plymouth Chrysler ?....A/C Air Conditioning Drier 1970's? 1971 1973 1977 1980?...not sure of application.  It measures 9-1/2" total length and is 2-7/8" in diameter.  It has one aluminum screw on plug and one plastic cap sealing it.  The condition is good to very good...minor surface oxidation.

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