Your Walther is marked ac 44, built in September, 1944. Serial numbers started at 1 and went through 9999. 93 is a low serial number in the series. The months started at "a" for January, "b" for February, etc. so "i" would be September.
Looks like a very nice collectable P-38. You can see it's late war because the tool marks are pronounced. These were not finished as smoothly due to urgency of production at the time. Not sure what the eagle 359 proofmarking is. Maybe tells where the pistol was manufactured?
Les