Window Balancers #1

I need a pair of window balancers. The stamp on the balancers reads 22 4 A O Caldwell. Even though the stamp says 22, the metal portion measures 23 inches. See photos. The shoe width is 1 2/32". The channel width appears to be 1/2".

I also need another pair of window balancers but will submit separately to avoid confusion.

Thanks, Jordon