Jes,
In addition to the proof mark information requested by Ron, it will help knowing if this gun has or had sear and/or magazine safeties. If you are not familiar with these devices, the photo below should help. The upper arrow points to the sear safety and the lower arrow to the magazine safety. If you see a slot cut in the frame as in the photo, it will confirm that there was a magazine safety installed and you will not need to remove the grip. A good photo of the left side of the gun, taken from a slightly downward angle would allow us to judge, as well.
