I think it's funny to consider a 1950 10M a 'later model'. Heck, they were made up until the mid-'70's...so, technically speaking, an early '50's horn is a 'middle period' model.
They are fantastic...and usually affordable because everyone goes ga-ga over the rolled hole era ones (those ended in '48). If you can get over rolled-hole envy...then the '50's ones are every bit as good as a '40's or '30's one.
I have had over a dozen 10's thru here, ranging from '39 to a '69....and really, they were all good. Certainly not identical, but their design never really changed all that much and they all...all...had that signature 10M tone; because really the body specs were consistent (except for the RTH) throughout the model's existence.
Not everyone's cup of tea, because some folks cannot get past having to learn the ergos (which once you do are fine) , and some vintages require a relocation of the strap eyelet (about a $25 tech job)....but still arguably one of the best Tenors ever produced.