aloomis305 wrote:I have a model 550 and the manufacturing has been called intol question. The date stamp shows "KT T" which could indicate a '48 model or is it a '70 550-T? Also it has a varnish stock finish and a plastic knob on the bottom of the pistol grip ('70?). May I also add there is no serial numbers either ('48)???
In my mind, you've answered all your own questions. No serial number leans towards 1948. TT is 1948. I know not of the plastic knob and related dating towards that. Not sure what you mean by 550-T.