I would recommend ONLY a holster repair person, Jerry Burney of this forum is very reasonable, he will handstitch, into the same holes and fix an item, if it can be fixed. Most repair folks repair very well, but would use a machine and just stitch it up, great for service use, bad for collectors.
I would bet your luger you are discussing is a police model, and probably possesses a sear safety, see the picture below. The top arrow is a sear safety, the bottom arrow is the magazine safety placed on some, but not all police lugers.
Police models were marked with a 1, 2 or a 3 (1 is the primary, 2 or 3 are secondary and third-dary
).