I have two of these Waltham Grade 210s, Model 1894. Size 12, 7 jewels, pendant wind and set.
The 1921 edition is fitted into an Illinois Watch Case Company "Ramona" case, guaranteed 20 years. It says "double stock" which has something to do with the amount and type of gold, but I'm not sure what.
The 1925 edition is in an octagonal "Defiance" case, which Pocket Watch Database says is a trademark from the Star Watch Case company. Ornate but it says "base metal" on the bottom in tiny print.
Acquired: 2019
Circa: 1925
Current condition: 1921 runs; 1925 runs in short bursts