There are 3 possibilities for your gun. The 7.65 caliber (32) is a semi auto pistol with a 3.65" barrel. The slide is marked Rheinmetall ABT. Sommerda. The finish is blued and original grips were walnut. The values on this gun are:
excellent-$350, very good-$225, good-$175, fair-$125, poor-$90.
There is a 9mm version of this gun that is marked the same on the slide. The gun is too rare to price and it should go to a certified appraiser.
The other is a 9mm with a 5" barrel and an 8 shot magazine. The slide is marked Rheinische Metallwaaren Und Maschinefabrik, Sommerda. It is blued and had hard rubber grips. It was manufactured before 1916 in small numbers. Values are:
excellent-$4500, very good-$3750, good-$2500, fair-$1500, poor-$750.
Ivory grips can add $100 to $150 to the value.
There are only a few states that require permits for handguns. Among them are NY, NJ, and Ill. You can go to www.nra-ila.org and click on gun laws at the top of the page. Then click on your state and it will give you the laws for the state.
I hope this helps you,
The 9mm gun will have a barrel that is .355" for the inside diameter. The 7.65 or .32 caliber will have a diameter of .320". The gun should be stamped with the caliber on the barrel or on the slide. The gun can be shipped by UPS, FED-EX or USPS. There can not be anything on the package saying what is in it and it must be shipped to an FFL (Federal Firearms License) holder. When you sell it, the buyer has to supply you with an FFL of the dealer they want it shipped to.
The best way for you to sell a gun is to use AuctionArms.com or Gunbroker.com. You have complete control of the auction, no one comes to your home or calls you, you get payment before you ship the gun and the buyer pays for shipping. The buyer must send an FFL from the dealer where the gun is being shipped to and he goes through a NICS check before getting the gun so you know that they are permitted to own one. You set the start date, starting price, bid increments, length of auction, reserve price if you want one, etc. You are permitted up to 10 pictures per auction.
You're welcome, Glad I could help you,