I think we can, but I'm having trouble making out the hardware in your photos. Could you take a clear picture of the top and bottom nylon attachments on either end?
A quick learner from Anaheim Hills California says:
June 17, 2017
In reply to your request of pictures of old sash.
On sash it says
26 4 JR CALDWELL
Barbara
Tom from SWISCO responded:
June 20, 2017
Great, thank you. This could be either our S380-27 or S385-27, depending on the size of the shoe. See what you think. I'd recommend the 2640 option in either case.