More Questions on a Borchardt
 

I mentioned this pistol in September, and now have made a more detailed inspection. It is marked Waffenfabrik Loewe Berlin over the chamber. The toggle is marked D.R.P No 75837. The left side of the barrel has Crowns over E, G and U and the number 17223. The number 947 appears on the bottom of the grip, the trigger, the side of the rear toggle piece, shoulder stock lug. The stocks are not numbered to the gun. The magazine is a mismatch with the number 303 stamped on the bottom.
My questions: which numbers should match? I'm puzzled by the different number on the barrel and the toggle. The number 947 on the frame, stock lug, trigger and barrel does not match the number on the top of the toggle? Is this a mismatch.

The number on the barrel is actually 172,23 which is in accordance with the English proof laws of 1894. It indicates that the caliber of this Borchardt is 7.63mm, as 172.23 is the number of lead balls of that diameter required to make a pound.

The markings on the barrel are actually Crowns over the letters B, U, and G. In essence they indicate that the weapon has been tested with a proof load, has passed final inspection and has a rifled barrel.

The number on the toggle is the patent number (D.R.P.=Deutches Reich Patent)

From your description, the only mismatch is the magazine as you have observed.