you sure it's a Vincenzo Bernardelli and not a Piettro Bernardelli?
in either case it is probably not a side lock. do not believe there were any side lock PB's and VB's i think only the VB Holland model was a sidelock. the others had dummy side plates which INCLUDED pins installed from the back to make the plates look like they contained lock parts.
in any case i've only owned one VB and it was a roma 6e and was just a really great gun in every respect. but the lock plates will fake you out. be sure before paying for it you're not paying for a SL and getting a BL.
roger
