Channel balance

A contractor from Newburyport MA says:
July 16, 2020
I need 2 38" long plain channel balance. The marking on the balance is 38c 8s1 or could be 851. The shoe looks like snap on clip 15-170 and the top looks like short s clip 19-029.
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Bob from SWISCO responded:
July 20, 2020

Thanks for posting. This appears to be an S770-38, with a stamp option of 38C, and fitted with the 15-170 clip on bottom and a rivet installed on top to use an s-clip like the 19-029. We can provide this for you via a custom order. Can you confirm which hole on top of the balance that rivet is in? In other words, is it in the very top hole of the metal channel, or second-to-top hole? From there I'll write up a quote for you to order a pair of these custom-made balances. Many thanks.
A contractor from Newburyport MA says:
July 24, 2020
The rivot is in the top hole. we need a quote for 2

Thank you
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Bob from SWISCO responded:
July 24, 2020

I just shot you an email with a custom link enclosed to order a pair of these balances. Let me know if you have any other questions prior to your order. Many thanks. 
Snap-on clip
Snap-on clip
15-170
$2.45
38" Series 770 Balance
38" Series 770 Balance
S770-38
$13.87
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