They look legit to me, but I agree that the right stock pane has been recut by somebody who is not as skilful as our own Swamprat, or the Colt factory. If the medallions are gold, they are Python stocks; if silver, then the stocks were original on a Colt 357, Officer Model Match, Trooper 357...maybe one or two others.
The right side stock panel wears faster for right-handed use of the revolver than the left stock pane. That might explain why only the right stock panel looks recut.