Let's you came across a nearly perfect mid-fifties 16 ga. with a Poly Choke. Barrels of this vintage are serialed to the receiver, so a simple barrel change is not so simple.
Would you elect to A)Keep it as is with Poly Choke B)Cut the Poly Choke off and live with cylinder bore on a full choke marked gun or C)install interchangeable chokes such as Briley, etc?

These things are never simple. It's a gem, all original, no added pad or shortend stock, but the Poly Choke could be a deal breaker.