Help identifying bathtub faucet stems

[silverbullet]

I removed the stems from my bathtub faucet to replace the worn washers. In doing so I broke part of the thread off of the stem. Trips to most of the plubming stores in tow have proven futile, as no one recognizes the brand. Can anyone here identify this stem, and suggest where I may find a replacement? The stem is ~3 1/2 inches long, not including the washer. I cannot find any idedtifying marks anywhere on the stem or the handles.




the arrow points to the broken thread

Thanks in advance,
Chris

[cwhyu2]

Universal/rundal