There are still a few vendors who do the rechrome and repaint of plastic inst' bezels but... the damage repair might drive the cost above the cost a brand new reproduction. Even if it's not cracked, missing pieces, etc.., many of these 50 yr old rally bezels have developed a wavy brim that doesn't line up to look great under the dash pad. Bottom line... It's hard to beat a brand new one ( made in China ).
Vendors such as Instrument Specialties who do the instrument repair service in house typically outsource the plastic bezel restore service. You ship to them, they ship elsewhere, thus the long wait.