Just so this discussion is complete, educationally-speaking, Putz is a common Yiddish expression with a few meanings, one being a slang reference to a part of the male anatomy, but also meaning "fool" or "idiot" as determined by context.
I just coudn't pass up a chance to teach, y'know how it is.
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I collect fine cannon models (patent, arsenal, salesman, maker's, presentation), mug-type brass/copper gunpowder measures, artillery sights/quadrants/shot gauges, cannon firing flintlocks, percussion locks, early artillery books, manuscripts, artillery projectiles, original cannon barrels, etc.