This particular gun is not in the Serialization Book and yes, you should be able to find the Serialization Book on the web.
If it's a damascus barrel, the rib inscription should say damascus and there should be a capital D on the right barrel flat. A true Parker beavertail forend should have the reinforcing screw visable on the end of the forend and the forend lug should be the one piece long type running full length from the lug back to where the barrels hit the flats. Measure the barrel length, they should, in most cases, be exact to the inch and should, again in most cases, have a small blank space at the end of the rib matting just before the rib ends. Hope this info helps you.
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