86u34-9eb5 cmc1

I'm not sure what you have, unfortunately. There are dozens of different balances with that stamp. It's not a product code or anything, it just indicates the strength of the spring. Our service requires clear and unobstructed photos of the hardware in question at minimum.

In order to figure out what Series this is, I need you to remove an undamaged version of this balance from the window and show me clear pictures of the top and bottom nylon fittings. I will also need to know the dimensions of these fittings.

Lastly, I note that your stamp has an "86" at the front of it. This is a special code only used on special assembly balances. Moving forward, please understand that these balances will have to be a custom order (assuming the other details we've requested check out). I'll need you to give me an exact count in addition to the other information.