I cannot see that well from your pictures, but it is not one of the high grades. It does appear to me to be a featherweight model which adds value.

As stated above it may be either a Lindner or a Sauer. Daly imported from both. The Lindner will probably have his crossed pistols maker's mark on the bottom of the barrels.

In the shape it appears to be in, I'd say two grand, maybe a little more if its a Lindner and those markings on the rib show it is a featherweight...Geo