Need Advice 1920 Swiss DWM Luger

[eagle7373]

I an looking at a 1920 Swiss DWM Luger, but wanted any advice on whether this is legit, or worth buying.

Here is a description: "1920 Swiss Commercial Luger, 3.75” barrel, and modified safety. SN: 77810. Cal: 7.65mmL. The Swiss “cross in sunburst” over chamber appears partially handcut or enhanced. Middle toggle link with intertwined DWM. Crown/N on left receiver, under barrel, and left side of breech block. Full serial number under barrel and on forward frame. Last two matching digits on all the usual numbered parts. Grip safety modified so that when the thumb safety is in the off position, the grip safety is deactivated, free to move forward without impediment. Unnumbered walnut checkered grips and magazine with blued body and wood base numbered “1200 d”. Condition: Approximately 97% original rust blue with several of the numbers having haloed edges. Slightly less condition on the strawed parts--particularly the trigger, whose right side and front surface have greyed. Sharply checkered grips with staining but negligible imperfections. Bright bore with strong rifling. Perfect manual mechanics. An interesting Swiss both by virtue of the chamber marking and modified grip safety."

I have enclosed some photos. Asking price is $2200. Any advice?