First are the gloves!
There are many kinds of black leather gauntlet gloves that could serve the purpose well enough, but as I've said before, I'm a stickler for details.
Unfortunately almost all the gloves I had found had combinations of the two signature things that make V's gloves unique. They would all have the right gauntlets but the glove portion just wasn't right, or vice versa.
Then I found these on Ebay:http://i165.photobucket.com/albums/u49/ViennaRouge/Vgloves.jpg
The stitching is almost exactly like the kind on V's gloves, specifically on the fingers and backs of the hands. The gauntlets can be added if you or someone you know is talented with needle and thread (sewing machine preferably) since V's were also seamed on at the wrist out of a thicker leather. Judging from the ones I bought, the gauntlets should attach at the point where the slit in the glove's wrist begins, so you'd actually be getting rid of some excess length on the gloves themselves...if that makes sense.
Seller's store (with a narrowed list of the above glove style. They have a lot more stuff)Seller's Store
Then, there's the buckle.http://i165.photobucket.com/albums/u49/ViennaRouge/v204.jpg
This gent in the UK is a wicked machinist, and produces some of the best replicas I've ever seen! Including a few sonic screwdrivers for all you Dr. Who fans out there.
The one he makes is a smidgen different, but not enough to really be that noticeable:http://i165.photobucket.com/albums/u49/ViennaRouge/8b_3.jpg
He doesn't have much in his store at the moment, but check back often. It's usually stocked with a few V buckles and a ton of other items:Replica Buckle
..so I thought I'd add a few recent finds in my on-going search for various V costume items.