It is strange.
I did a google image search with LMSR and MSR.
It clear that the LMSR series, like my photo above, are polished:
Here's an MSR series:
Key difference is the design of the dimples. The MSR has the dimples spread more broadly across the surface of beam. The LMSR series clearly has a defined oblong shaped area where the dimples are.
Actually my own photo of the two stubbies shows that clearly too.
Nonetheless, it's strange that KTC doesn't list the LMSR in their catalogue, even though it's clearly being sold today.
Discrepancies are super common with North American brands (truck brand or not), and I've always found Japanese tool companies' websites reliable (not to mention so much better in content), so it's kinda surprising to see this from a big-name Japanese brand.