They are the 270 series Doc. They need to be opened up, so we can see what the pump mechanisim look like, for a positive identification. The pump cyliders have been removed, (brass) so a bunch of the mechanisism is probably missing too. Between the two, you might be able to salvage one.

If you want to part those out, I might be interested in one of the towers. (Appologizing if this is a breach of etiquette)

Anything Chevron
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I'd rather be flying.....