A very special example the likes of which I've never seen before. It's interesting that the smooth stocks are not addressed on the box's end label, so it's hard to say if they're original or not.
www.rockislandauction.com

Factory Engraved Smith & Wesson Model 39-2 Pistol with Box
Factory "Class A" Engraved Smith & Wesson Model 39-2 Semi-Automatic Pistol with BoxManufactured in 1977/78. Factory "Class A" floral scroll engraving on a punch dot background and smooth Goncalo Alves presentation grips. Includes original silver box confirming engraving, tools, and an extra...
