The worst thing about the early non-goggled bayonet version of the Summaron 35mm f3.5 is that it does not bring up the 35mm framelines (it was built early on, at a time when the only Leica bayonet camera was the M3, which of course did not have 35mm framelines). I have one which has been CLA'd and like its rendering very much. It is identical so far as I can tell to the LTM version which however has a different external appearance being smaller physically (as unlikely as this sounds as the bayonet one is pretty small itself) and taking the slip on filters not the 39mm screw in ones.
Back to the frameline issue - this can be corrected by a technician who will file the bayonet lug to bring up the right framelines. I asked the guy who CLA'd my lens to do this while it was in the shop, but he forgot so I have just persisted and now instead use the manual frameline switch on the front of the camera instead. I understand I can do it myself but have never been game to try.
I will see if I can find some shots to post here.