Where can I obtain a used American Standard bathroom faucets?

[tmarsh2BU]

Our 3/8" compression hose connecting cold water shut off valve to faucet handle (older American Standard Kirkdale widespread set / now called Edgemere line) ruptured. Unfortunately, American Standard doesn't seem the compression hose separately or with the handle kit. The hose appears non-standard. While then size (3/8"), length (24"), and female end (threaded with nut) are standard, the male end isn't. It looks like an m10 with two o-rings but it's not threaded.

Any idea where I can obtain a replacement hose, new or used? I'd rather not spend $200 for a whole new fixture if I can avoid it.

We're currently located just northeast if San Antonio, TX.