The V-21 kit has arrived.
First impressions: Though the seller insists it's a Dujin kit, it doesn't look like it is. No Dujin name or catalogue number, no instructions in French (just a 3 view drawing), even the resin is made differently - in 'blocks' rather than 'puddles'. It's a very basic kit, only 10 parts, no struts, u/c legs etc. The parts have very basic details (if any) and the body is a one piece resin block. The cockpit is just a round hole in the block and any interior detailing will require a lot of work.
It's definitely not a copy of the Omega Models Fokker V-23 kit.
Assuming the kit is accurate, I can only find two differences from the V-23: The wings seem slightly more tapered and the cockpit is positioned slightly more backwards. I can't be certain as I've seen some different V-23 drawings. The general dimensions are similar to the V-23.
I can't recommend this kit... Not that there will be any demand, and I doubt it if another one of them would ever show up again.