[Ron Ramirez]

If you are referring to your Philco 34, then no, the model 34 was out of production before October 1936 - in fact, 1937 model Philcos were bring built in October 1936.

Philco transformers are all stamped with the month and year of manufacture. Which means your output transformer was a replacement, and was made in October 1936. As to when it was installed, that is anyone's guess. A part made in October 1936 might have been stocked by a Philco distributor or dealer for months or even years before it was actually installed in a customer's set.