if they can't see it at MOT time they can't even start the MOT. i would mask it for sure. i had a tiger cub two weeks ago, went 13 miles for the MOT and when i got there..... we didn't even get it started! the number he felt ho coul;d see was rejected by the vosa 'puter.
as It'd look better to coat the frame and then stick the plate back on, looks like its only held on with glue, but I dont wont to start prising it off to find it fooks the plate, as you say I'll need at MOT time.
Right now I'm home, the Ali VIN plate was just stuck on came off rear easy. was thinking it might be stuck on with some type of industrial super glue and would a pig to get off.
Powder coatings costing 90 GBP that to gritblast and coat in Gloss black only.