One NOS part with a mid 1970s production date and federal stock number identifier. Application unknown. 

 

Box is marked with following:

Same box data is shown on the mil wrap which has been opened. Original part is still in plastic sealed wrap.  Metal data tag identifies the maker as Pneudraulics Inc. of Montclair, California.

Unit appears to be a cartridge type check valve. Ink stamped with p/n 78385 419-0053ASSEM 2075 

Perfect NOS condition. Probably fixed wing or helicopter application.

What you see in the photo series is exactly  what you get. 

Ships cheapest USPS First Class Package unless you request otherwise. Questions? Please ask seller. And thanks for looking!