This Sylvania 4P14 is a rather large radio to be using only 4 transistors? It runs on a single 9V battery. The serial number appears to be a very low 67!
Collector Alan Kastner of ‘RadioWallah’ also owns a Sylvania 4P14 and he puts a different spin on my low serial number speculation. The full serial number of his 4P14 is 661100-003-2965. Alan surmises that the top six digits are either a product code number or some similar indication of production lines/runs and that all seven digits that follow likely represent the serial number. Alan suspects this to be the case because the last group of four digits would be insufficient to track the serial numbers needed for the model if Sylvania produced more than 9999.
Alan also presents an alternative scenario: The string of three digits in the «middle» could represent the color variation and/or some other aspect of the production run. If so, then the last four digits could show the serial number in relation to that one color or particular. However Alan thinks this is unlikely because such an approach wouldn’t require three digits. It would also make the tracking of product overall much more cumbersome and prone to error. And, it would spoil our chances of knowing where the unit stands in terms of its order in overall production.
Well your guess is as good as mine!
