I have several WW1 early including a US Test piece correct holster. I assume there was at least one type made for my 1902 Fat Barrel and can't locate the actual correct holster for it. There were approximate 500-600 and made for US import. Did the seller direct to customer buy a US type holster? Maybe Aberchrombie & Finch for example!
http://landofborchardt.com/holsters.html#american