Cheers Andy - the 1924, despite its name, can be found as far back as about 1916 (I think) certainly pre-1919 (the great GEM/ASR merger) and most definitely a LONG way before 1924. 1924 refers to the Sears & Roebuck catalogue of that date where the model was popularised. It would have been produced through to the late 1920s, perhaps just beyond ... but extinct with the introduction of the GEM Micromatic, GEM Junior (a revamped 1912) and Ever Ready New Improved (another revamped 1912 model). Looks like the 1912 won as a design, which we can read as "easy to produce", I guess; like Gillette with their Tech.
I digress, but you know I usually do ...
The 1924 (or 'Shovel Head') is relatively easy to find; in good condition, less so, which almost all nickel plated will have deep scratches and dings due to a design oversight where the cap flips straight over and smacks into the handle. Gold, almost all are in horrible condition - it was a cheap and light wash, so this one is likely a former gold tone which has now lost its regal charm and become a shining Pauper Prince. As you can see, for a nice razor, the gold is perhaps a good choice ... certainly for a good scrub and polish.
To find, one I think "shovel head" would glean more results than 1924.
As a shave, we tend to regard these as one of the more aggressive. Personally, I put it as more aggressive than the fabled GEM Micromatic Open Comb and would probably put this as my third favourite from the GEM/ASR stable: 1914 and 1912 being 1st and 2nd.
Collectable models are the Wall Cabinet, the Cigarette Case and the Deluxe. The latter must be in perfect gold and cased. For a shaver, there are two main working end versions: a squared comb and a curved comb; aesthetically, two versions also, one with a regular 1912-style handle and one with a shortened top and pillar base on the cap. All will say "Patent Pending" under the cap, pre-1919 "Co. Inc." and post-1919 "Corp.".
How's that?
Happy hunting ...