Scarce to rare CD 578.1 from Poland

By Bob Berry; posted February 10, 2019

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Here is a rare marking for this cool large insulator -- CD 578.1 marked ,,FALENCIA" -- a long flat base chip is the only issue (see pic) -- there are only a handful of these known and virtually all have some damage - this is one of the better ones! These are typically marked J. STOLLE,,NEIMEN" and these are scarce too! $150 plus actual postage for this one.