[Arran]

Refinisher, like Formby's, is snake oil, all it is is a concoction of solvents that melt the original lacquer, and swirl it around, making a muddy looking mess, I have a 1929 Canadian Westinghouse where someone did that to it and it looks like someone did a bad job of stripping the cabinet. The original finish was lacquer, though it is possible that someone could have coated over it with shellac, if so alcohol will remove the shellac. Stripping the cabinet, with chemical strippers, will leave most of the grain fill intact, even if it doesn't you can still get grain filler such as Chrystalac and go over it again, that isn't the only one of course. Don't try duplicating the effect with excessive coats of lacquer, the thicker it is the more susceptible it is to cracking, and other damage. Another method is to sand the original lacquer with a fine grit of paper, or steel wool, and coat over it with fresh lacquer, results may very of course.
Regards
Arran