Don't get me wrong - we're still on cast iron...
The best I can do is what I can find on this site, and that is that numbered (3oclock dash or not, dot or not, handle number peculiar to 3's)) or logo'd, they were made between the 1920's and the 1940's. Does anyone have information that may be a little more specific to when they were numbered, or when they added the logo, etc? Thank you in advance!

