We believe you have an old Capitol storm sash that uses our 91-001P, metal finger latch pair with the 91-003 locking spring.
A home owner from North Richland Hills, Texas says:
March 31, 2021
Hey Paul, I need to order 1 Set-L/R latches, your product # 91-001P. I also need the two locking springs, your product # 91-003M Your detailed photos, made it incredibly easy! Respectfully, Bill
Paul from SWISCO responded:
April 1, 2021
That's great. I see that you already placed an order for these parts so you should be good to go. Thanks for posting!