A lot of confusion over that model. Some places in the US advertise them with a 4.25" barrels but apparently they are just under the legal limit here with the compensator removed. 'Apparently' some, in stock form, made it up here a while ago and were promptly seized (not sure I have a reliable source for that)
Anyway if the stock version is a prohib, and yours is a verifiable, factory installed barrel, yours is pretty unique. I would certainly pay more for it than a standard 5" Classic as I like the unfluted cylinder and the trigger jobs on those are great. Some may also like the more traditional barrel styling compared to the comped barrel. Hard to say on value. Might be worth more to some but less to others. Would probably net out pretty close (maybe a little under if i had to choose, but not much).
Did you pay full V-comp price? Curious to know how it shoots as that is really the most important part.