lucbrodeur

I inherited from my father the CCM bicycle  he bought in 1947. It is in good shape, original green color with white strips. 

I want to continue to use it, but I need new tires, and I can't find the adequate size. The tires that are on it actually were made in Holland, brand Paragon, and the size written on the tire says 

26X1 3/4 X2       650X50     RIM F12

I do not understand the meaning of the X2 at the end of the 26X1 3/4

650X 50 must be size in metric ?

RIM F12 , what does that mean ?

Please help me, this bike deserves to be ridden for many generations,.