19 3 ER CALDWELL

Thanks for posting! Your channel balance looks like it could be either the S380-20 with a 1" shoe or the S385-20 with a 1-3/32". Although, there is a chance the shoe may measure 7/8"; if so, please let me know as your balances will need to be a custom assembly.

To confirm the series you have, you'll need to confirm the dimension for the depth of your bottom shoe. Take a look over the diagram below for reference.

You'll need the 1930 stamp option.

Comparison of the S380 and S385 balance shoes.