With the U.S. military being interested in the Luger as a replacement for the revolvers at the turn of the century, an order was placed for 1000 pistols and was delivered in June. The delivery was made in two separate lots; the first quantity was for 900 pistols, the second quantity was for 100 shortly after. The first lot have a serial number in the 6,100-7,100 range. The second in the 7,200. Apart from the serial number, the other distinctive feature of the U.S. test model is that the military was exempt from having the standard country of origin import stamp marked on the pistols, which means they lack the "Germany" markings usually found on the front of the frame or under the barrel. The other distinguishing features are the small Germany ordnance like "bomb" proofs inside the front frame recess area, the recoil lug on bottom of the barrel extension with the last two digits of the serial number,"51" stamped on the opposite side of the take down lever. "51" is also marked on the rear toggle and the side plate. The pistol has a 5-inch barrel, chambered in 7.65 mm and the frame has a grip safety and no stock lug. It has the early style dished toggles with the toggle lock on the right side. The United States Crest is stamped on the top of the chamber and the DWM script monogram is on the top of the front toggle. The front of the frame and bottom of the barrel are stamped with the serial number "6651". The magazine has a nickel plated body and unmarked wooden bottom.