The Stanley #4-1/2 and all the larger planes (not the #5-1/4 or #10-1/4) used the same tote with two fasteners. The later #5s may have used a different tote, this may have been in the handyman line.
They are often available on ebay. This is one of my reasons for always checking for old or broken planes while rust hunting.
One way to repair a broken handle when the pieces do not fit together properly is to re-saw it near the break and then make a shim with similar wood or make a multi-ply piece of various woods for effect, to fill in where wood was lost. One of my handles was made larger doing this. It is the only plane all my fingers can fit comfortably around the tote with room to spare.
jtk
"A pessimist sees the difficulty in every opportunity; an optimist sees the opportunity in every difficulty."
- Sir Winston Churchill (1874-1965)