Well... I went again today and looked over the rifle. It's a MkIII* made by BSA in 1916. All matching numbers. Rifle doesn't have any import stamps. But I passed.....
I instead snagged a Cherry Mint Egyptian FN-49 and a US Model 1917 (Remington) withy a barrel date of 2-18. Everything on the 1917 matches except the bolt.... it has a different number stamped on the bolt handle. Pics inbound of both rifles. I paid $500 even for the FN-49 and $566.75 for the 1917.
I've wanted those two rifles for a while. The FN-49 will go nice with my Rasheed.
I know have the following US Service Rifles of the 20th Century
A Krag, a 1917, 1903, 1903A3, M1 Carbine, M1 Garand, M1A (M14 Clone), and a AR-15 (M16 Clone)