Hi Jim,
I must complement you on your thoroughness in researching the Craftsman pearhead/teardrop ratchets - I never realized there was such an extensive trail of changes to those ratchets over the decades. I've only considered obvious lever and QR design changes/evolutions for inclusion to my USA-made ratchet obsess..., er, "collection" - while I don't see that changing for me anytime soon, you've definitely helped shed light on what I do have and what timeframe they fit in. I'll also be removing (from the count at least) the couple of standard length bowtie/hourglass shifter ratchets I have, since your study and comments pretty well confirm what I was starting to ponder - that they're the result of repairs/kits and not original offerings. Although I also have to "dang" you, as now I'm gonna have to find more of the early rounded-corner raised panels to add - never noticed that before (and just realized I have one in 1/4") and they're different enough for me to include - so DANG YOU!!
Below is my reply (today) to your unusual 1/4" ratchet thread - I copied it over since that's an older thread. I think we're on a similar wavelength regarding that ratchet and it shifter origin:
So here's a pic of various 1/4" non-Craftsman pearhead/teardrop ratchets I have, along with an early and later Craftsman to compare. EASCO eventually made this ratchet design (teardrop) for multiple parties, and those ratchets variously had narrow shifter snap-ring cutouts (narrow like the Type 1/2 Craftsmans) as well as wider cutouts with thicker shift levers as all the later Craftsmans.
My SWAG (hopefully) employing Occam's Razor is this - Sears/Craftsman eventually ran low/ran out of Type 1/2 repair kits. Other-branded ratchets were in production and some versions utilized similar narrow opening shifter kits with levers that didn't protrude down into the wider shifter cutout. Instead of retooling to produce the increasingly older and obsolete Craftsman shifter, EASCO substituted the newer style shifter (and pawl if necessary) in kits for narrow cutouts to Sears. Simply put, it was cheaper for Sears to get replacement kits this way instead of paying to re-start production of an obsolete shift lever design.
The two NAPAs on the left have very narrow inset cutouts for the snap-ring without the levers protruding down into the cutouts like the T1 Craftsman beside, while the rest of the non Craftys have thicker lever ends that protrude down into the wider cutout area, like the T3+ beside them.
It's been a long time since I broke down these ratchets to clean and re-lube them, so I can't recall at all what they look like inside, or what kind/shape of protrusion/indentation they have on the lever to engage the pawl, or how completely they interchange parts with Craftsman ratchets. I'll also note that the one NAPA with the hourglass/bowtie shifter has an oil hole/ball in the top while all the others do not, so if that's used as a rough dating method, then the narrow shifter snap-ring and cut was used variously on other-branded ratchets for a longer and later time than the narrow openings on the Craftsman Type 1/2s.
So to recap, my SWAG is that your ? ratchet has a later rebuild kit in it from EASCO supplied to Sears as a replacement kit for the repair of early Type 1/2 ratchets that required the narrow snap-ring and non-protruding lever. This was done as a cheaper option (to Sears) than retooling/re-starting production of the specific Craftsman-style shift levers and pawls for an otherwise obsolete/dated design.
At least that's my nickel's worth...