[IowaPhilco]

...BTW then there is a question to you: is there information on which Philco used which plug? I understand this Acorn type was not used by all of them?
Radios like 118, 38-12(15), 39-6(7) etc?

During production of the 1937 models, Philco switched from cloth-covered AC cord to rubber. The rubber cords would have had a molded plug, I believe (the exceptions being 37-690 and 38-690 sets which have special plugs with fuses inside). The same is true of 38-12, 38-15, 39-6, 39-7 and later Philcos.

I've never seen any info on particular plugs used by Philco 1928-1937. On those Philcos I have seen the type such as in the picture you posted from Photobucket, the "acorn" style, as well as some with the "mid century embossed" type plugs in brown Bakelite (which are not really Mid Century). The majority I have seen have been like that in the Photobucket picture, though.

I have a 610 Bullet from '36 with the oval dial. The plug I believe is original and it's a Bakelite acorn type but with a loop on the end like on an older child's pacifier to pull from the wall.