Does anyone know which manufacturer and part number these are?

Assembled view:
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Need help identifying the stem & trim for this leaky faucet:
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Specifically having a hard time tracking down the washer which has a small lip to it:
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Size:  19.2 KBName:  DSC06120 Washers Side.jpg
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Washer dimensions:
11/16" outer diameter
5/16" inner diameter
1/8" thickness without the 'lip'
The 'lip' is around 1/32" and is slightly wider than the 11/16" outer diameter.

Thanks in advance.