[Randy H.]

Serial Number '1' wouild be nice, but than how did Philco count serial numbers? Some outfits started wirh '1' as the first item of production, and just sequencially(sp) number until they went out of business or a new CEO came along with his own ideas.
Philco probably assigned batches of S.N's. for each different model. Additionally, it MAY be a coded number that shows run numbers, Model ID, dates, night watchman's key number, ETC.