With revolvers, the barrel length should be measured from the front face of the cylinder to the muzzle. On 38/44s I believe 3 1/2" was an available barrel length. If the barrel was cut, it greatly affects the collector value.
Also a refinish reduces value, even if done at S&W factory. Until recent times, S&W stamped the refinish code on the frame under the left grip.
Frame, cylinder, underneath barrel & inside right grip... and box... should have matching numbers for best value.
Best Wishes,
Russ