That was my first guess as it being a sears. I went to a tractor forum today and link some pics over. With in an hour I had several replies. And was shocked to find the answer.
Come to find out this tractor was made by MTD in the very early 70's. So we now know the maker. Just have to find the model. I am told that they did not use tags but stamped on serial data. And they told me where to look. So will do that one day this week.
I also found that this tractor has been re-baged over 20 times. So there are many "models" out there. All the same but different paint schemes. JC Penney, Orion, Unico, Alis Chambers, Montgomery Ward, just to name a few.
That engine is a cast iron 10 hp Briggs and Stratton. I already ran the numbers on it. Biggest 10 hp I ever seen lol.
Going to be a fun restore. Most of the parts are there and they still make stuff for this one
The exhaust is a mess for sure.
Here is a pic of a restored Unico.