Hey D-Bar! I have seen a number of ORIGINALS with multiple dovetails in the upper flat of the barrel, all in a row marching down the barrel further and further as the owner's eyesight changed. Carefully drift your rear sight out of the gun and set it atop the upper flat and slide it down a wee bit at a time until focus returns, then put a mark an inch further (unless you plan on getting Lasik, or you have Ponce de Leon's secret map to that one special spring in Forida). Either cut your own dovetails or have a gunsmith do it for ya. Drift in a flat blank in the old dovetail to fill it in.
Not only is is historically correct to reset your rear sight on these guns, but it's the ethical choice if you are hunting with it. The gun isn't going to get mad at you over minor aesthetics, if you choose to do this!
Couple years ago a buddy had picked up a rough, but serviceable .32 caplock original. He carried it in his trade goods from one Rendezvous to another. Last I talked, he still had it for sale and it was getting more reasonably priced. Maybe I oughta give him a call?