Need your help to buy correct window coil spring balance and pivot shoe

A quick learner from Cape Girardeau says:
Please help me to identify the correct parts. I cannot find any words on the coil spring cover (no band name, no part number). I only find " #4.0 35" P " on the spring as shown in the picture. The coil spring width is 3/8". The coil spring cover (support) width is 1 1/4", the length is 4 1/2". The pivot show's thickness is 1/2" and the shoe's width is 1 1/4". Could you please help me to identify the correct triple coil system for me to purchase from you? Thank you a lot!

Sung
Thumbnail of the uploaded file named coil spring.jpg
Thumbnail of the uploaded file named coil spring-2.jpg
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Bob from SWISCO responded:

Hey Sung. Looks like you have a 15-199 Pivot Shoe. just remove your old one and compare to confirm. If the coil springs are 3/8" thick and all stamped #4, use our S165-4 springs. For a new cover, see our 15-205

A quick learner from Cape Girardeau says:
Thank you a lot for your help! One more question, On the top of my old Pivot Shoe, there is no any protruding (The top surface for old Pivot Shoe is flat). Your 15-199 Pivot shoe has two protruding on the top, is that still comparable? Thanks!
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Casey from SWISCO responded:

I wouldn't worry about the alignment lugs on the top of our pivot bar. As long as the dimensions of our 15-199 match up to yours, you should be good to go. 

A quick learner from Cape Girardeau says:
Nice! Thank you for your answer!
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