The "CHL" is actually "CAL", short for "caliber", which is 7.65mm Browning, or what we call .32 ACP, and that is the ammunition that the gun takes.
The ivory grips are almost certainly plastic, put on in this country; I will almost bet you will find the name "Franzite" on the inside. The marking is S&S for "Sauer und Sohn" (Sauer and Son), which is what the original black grips had on them.
Unless it can be cleaned up, using oil and copper wool only, no wire wheel or emery cloth, value would be under $200. Cleaned up and with the holster, it might run twice that.
A better evaluation would depend on good pictures of both sides.