Trying to get part for window

A handy person from Alden ny says:
Previous. Owners cut the coil so can't get any markings on sizes Look at side of window and says duralite L10102010. Would like to order the part since window won't stay open Hope the pictures help on id the part.

User submitted photos of window hardware.
Profile picture of Dave Sr.
Dave Sr. from SWISCO responded:
Thanks for posting. Please see our 15-180 shoe, 15-181 clip, and Series 190 coil spring. You will need to look at the stamp number on the coil to determine the Series 190 option you need for your window. Let me know what you think.
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