Steve,
Don't know what style you are looking for, but El Paso Saddlery makes a very good copy of the 1900 US Test Trials holster. The owner made the pattern from an original trials holster that was brought in to be re-sewn (the holster belonged to the late John Morgan, a long time Luger and early automatic collector. You can see John's consecutive numbered prototype Lugers in Kenyon's Lugers at Random).
The El Paso Saddlery holster can be purchased with and without the US stamp on the flap. I don't have a current catalog, so I can't quote a price.
The El Paso Saddlery address is 2025 E. Yandell, El Paso, TX 79903. Phone (915)544-2233. Web site is
www.epsaddlery.com, click on the Military link. There appears to be a problem with their site right now. When you click on an image, the enlarged image and information does not come up.
Jerry,
I have an original Trials holster. Send me an e-mail if you are interested in pursuing making a copy.