Nice old reel , what you have is young made 10B model perfect , without line guide , I'v seen some that did have the line guide , in a 3 3/4 and in a 4 inch
Never one in your size , that's a big reel at 4 1/2 , they don't weigh as much as a old Hardy or Dingley ,
Your reel is also not a leaded one , as for the age of it , could be from the 30's to the 50's , I'd think more so earlly
Good reel and nice find or buy