Commercial DWM Date and Value?

[DrRich]

Hello.
I was curious if anyone can tell what when and where this pistol was made. Also it's general value.
Here's what I know:

It is stamped DWM on the top strap of the toggle.
It is 7.65mm caliber.
It has the nitro stamp, a crown with an N underneath it (Located on the underside of the base of the barrel).
It's serial is 1844 with a fractur (Cursive) o underneath it.
It also is stamped GERMANY on the front-underside of the receiver.

It is in fair/good shape with some minor pitting.
It does have the stock magazine with the wood bottom.

I am guessing it was made in the 20's for an English market, from possibly a WWI 9mm p-08 rechambered in 7.65mm?

Any help would be greatly appreciated.

Thanks!
Richard