>Since the design in the 'cracker' bowl is that of an Ukrainian egg
no, other way around, Ukrainian eggs were patterned after this thing.
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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.