replacement channel balance with unique shoe

I need to replace a broken channel balance from a Nuprime window. I initially thought that the 17" series 390 (version 1640) would be appropriate, but had reservations because the shoe looks slightly different. I have included photos and am hoping that you can identify the appropriate balance/shoe combo. Will I also need a take out clip?

Thanks,
Peter

Thank you for your prompt feedback. There are no wings on my shoe, however it does not match the dimensions or curvature of those you have shown. Length of my shoe is 3/4" and it has a more blunt toe with a slight indent. I don't know whether these other options are interchangeable, but would appreciate you option on how to proceed.

Thanks,

Peter

Hopefully these additional photos will help. The edges are crisp and don't show any signs that a piece broke off. Do you think there would be any issue in replacing it with another 17" 1640 channel with a slightly larger shoe? If not, are there any additional parts that I will need to install this on the window?

Thanks again for your help.

Had the same problem with norandex windows. it called for a 2950 channel guide but the shoe was too big. I shaved it down on a bench grinder and it works fine.