Just to add to Mike's reply, from the parts lists that I have seen (AS3, RD125, RD125DX), all of the 125 models had the handle painted black, not chrome plated. The part to models sequencing is the same, but substitute 307 and 396 for 337 and 397. They are all interchangeable.
The racks that I have on my 125A and 200B use the handle mounting points (ie shock and mudguard), so the handle is removed and the bike is lifted using the rack. On Gr8auntiepat's 200DX, the rack uses different mounting points, so the handle is retained.
Rob, expect to get £40+ for yours, if it's in half decent nick.