Champion window with broken shoe

Hi! So glad to have found this site. I ordered a spiral balance charging tool from you, but after it arrived I discovered that the shoe at the bottom of the balance was completely destroyed. I managed to pull it out of its slot at the bottom of the jamb so I could take a picture of it. It measures approx 2 x 1.25 x .75 inches. The sash locks are embossed 'Champion', so I'm assuming these are Champion windows. They are aluminum replacement double hungs in a tenement building in NYC. Any chance you can identify this shoe?

Paul,

Many thanks. I took a chance on the 15-047 last week, and it fits perfectly. I must have mis-measured the broken one.

I can't stress how much I appreciate the existence of this website. It's amazing to me that people here in NYC live with barely functioning windows for years, just for the lack of a couple of parts! Thanks to Swisco, I'm systematically tuning up all the windows in my apartment - with great results so far!

Best,
Jim