My 2nd ed. ORKS from late 90s'

One of my absolute favourite Ork miniatures ever. I'd really much like to add this fellow to my new Ork Mek army, but am not sure if I dare to touch the painting. Propably "varnished" with diluted PVA. All dusty now. More effort (=sand added) on the base than the others (just Goblin Green)...