Better than a rock, but, not by a whole lot.
25-65 USD or so
Inexpensive and fair to poor quality.
need info on rohm gmbh sontheim-benz 44 mag. model 57
10-80 USD or so
20-50 USD
$65-$120 depending on condition
50-150 or so
Try unscrewing the cylinder pin
The serial number on a Rohm .38 Special revolver is typically located on the frame, often on the left side just above the grip or on the bottom of the grip frame. In some models, it may also be found on the cylinder crane. To ensure you're looking in the right place, refer to the owner's manual or guidelines specific to your model.
What is it worth? Cal 38 Special (RG63) on handle. Double action serial #54402 Rohm Gpirh sonheim-Benz
50-300 USD or so
50 USD or so