Cheers , to be honest I don't care about looks to much its protection I want , now days powder coating much better and loads coloursGlass blast - metallization and then paint.
Powercoating can be okay - but not as nice looking ... imo
It should be cheap. It is good corossion protection and good base for paint/powdercoatZinc plate ....? Yeah that an option . See how much will cost .
2 bikes , twice is happy