Updated
@Old School ...
The one on the right is the Standard Goodwill #160.
The one on the left with the "art deco" cap is either the #162 Reverse Stud Goodwill or the #164 Reverse Stud Goodwill - the last two talked about in the below history. We know it is one of these because these were the only ones to have the art deco cap. I can't see which because you didn't post a picture showing the underside of the cap but if the cap has two posts coming down which fit into the slide on the guard piece, it is the #164. If not, it's the #162.
HISTORY:
From the Krumholtz guide:
"The major reason the Goodwill idea was promoted was to wean the public away from the old three-hole 'No Stropping, No Honing' blades in favour of the new long slot blades. The old style blades would not work in Goodwills, of course, nor would they work in the NEW GILLETTEs."
"There are two distinct styles of Goodwill razors, and it must be understood thatthe Goodwills were made up from parts - parts from Old Type razors and parts from NEW GILLETTEs. The only concession made for the Goodwill was
the #160 cap, which was manufactured solely for the use of the Goodwill series.
The most common version of the Goodwill is the
Standard Goodwill #160. The indented #160 cap was designed to accept the 'reverse studs' of all Goodwills made up from NEW GILLETTE parts. The #160 guard was a NEW GILLETTE guard that had not had the centre slot milled, but had two diamond reverse studs created in a punch press. By reverse studs, I mean that the studs went through or into the cap of the guard, rather than the studs being placed in the cap, and going through the guard."
"Another type of Goodwill made up from NEW GILLETTE parts was the
Special Goodwill #175 which used a #160 cap. The guard was the same as found on the Standard Goodwill, except this razor had received the milling operation of the centre slot. The guard is different from that of normal NEW GILLETTES in that it has the protruding 'reverse studs' punched in. This razor was produced in extremely small quantities only in 1931.
The last version made from NEW GILLETTE parts was the
Special Goodwill #170. This razor retained the #160 cap but featured two 'L' shaped studs punched into the guard. These took the place of the diamond-shaped reverse studs. This version was also produced in extremely small quantities only in 1931.
All other Goodwills were fabricated from surplus Old Type parts; two versions of these razors were produced. The first of these was the
#162 Reverse Stud Goodwill. This razor features reverse studs in the diamond shape that were punched in the Old Type guard in the same manner as the standard Goodwill. The cap had the same diamond-shaped holes punched out which corresponded to the studs. Also, corner positioning posts were bent into the cap ends. This razor was produced only in 1934.
The
#164 Reverse Stud Goodwill was made in a similar fashion. The difference is that the guard had a slotted centre hole and the cap had 'inside slot positioning posts' that corresponded to the guard's slot. This razor was only produced during 1931.
The tops of the caps of both the #162 and #164 Goodwills were embossed with a tasteful decoration that borders the punched out diamond holes (aka the Art Deco caps)."
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