Tom from SWISCO responded:
October 12, 2017
It seems to me that this is probably a S385-27 with a 2630 option
The top attachment looks different, yes, but it should still work. After all, the top attachment isn't that complex, and you can get away with minor cosmetic differences. As long as the shoe measures 1-3/32" deep like the photo below, you should be able to select a Series 385. Then, verify the 27" length of the metal channel, and verify the 13 to 19 pound sash weight (because 2630 can hold 13 to 19 pounds). Comparison of the S380 and S385 balance shoes.
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