Hello....intermittent lurker, first time posting. I was wondering if anyone can give me some info on this Griswold dutch oven. I received it from a friend but he knew very little about it and some searching I did on Google turned up pretty sparse. While the logo would put it in the 1920s-1940s, the patent marking of "Mar. 16. 20" seems suspect to me unless the "20" indicates 1920? And why put "20" when the lid has "1920"? Plus everything is pretty crisp so it must not have been used at all, which would be surprising for the age. Does anyone have any insight on whether this is legit or if it is a reproduction? I also imagine that the lid was an "add on" later and didn't originally come with the dutch oven, correct? There also seems to be a hefty mold line slightly above the bottom in the 3rd picture as well...or someone tried to weld it. I plan on striping to get a look at the base metal to ensure no cracks, etc. and then reseason before use. Thanks in advance for any info!