Circa £300
depending on overall condition $2000 +
Most of the .25 caliber auto pistols are fairly cheap- yours is not. The Simson Company of Suhl Germany made high quality firearms. In excellent condition, yours is worth ABOUT $450. Here is a link to a brief history of the company- http://unblinkingeye.com/Guns/Simson/simson.html
Simson was an old term maker of munitions and steel products located in Suhl Germany. The rifle you refer to was a custom build, and the heaviest caliber available in that time period. Value would be in the thousands depending on condition, accessories, etc. Ammunition is roughly $100 per cartridge.
I have the same question, and I was also wondering how to tell what year the gun was made.
Visit www.bryndumlund.dk and read more about Christoph Funk, Suhl
100-10000 USD or more depending on specifics.
These guns were made in the early 1900's by F.W. Kessler Gewehrfabrik in Suhl Germany. Your gun would value between $600 and $1000.
Carl Enders, Suhl Germany. Made high quality double barrel 12 gauge shotguns from 1835 to 1890. They had ornate checkering and engraved metal work. Depending on the condition and workmanship the value is between $500-$1150.
Double rifles are a market unto themselves. You need professional assistance.
50-500
Eckart Suhl was born in 1943.