Those are the proof marks we thought should be there. Missing is the makers mark. I have two Pocket Police revolvers, one from 2003 the other from 2007, both are marked "...36 CALIBER BLACKPOWDER ONLY A. UBERTI ITALY... " This is found on the barrel, ubder the loading lever. Other Ubertis are marked "...A UBERTI & C ITALY... " on the frame (this from revovlers built in the 1980s. An earlier mark is what appears to be the muzzle of an octagonal barrel with the capital letter U inside it. An even earlier mark is merely the script letters "...G&U... " I am not aware of other marks used by Uberti. I am aware of a few pieces from Uberti that are not marked with his logo.
No matter what, enjoy that revolver!
Value is merely what someone is willing to pay for a particular piece. Book values are generally out of date or out of touch.