What wierdy said makes sense. It shouldn't have had a veneer but clearly looks like it does, which is a shame, because if you had known (and posted about it) we would all have told you the perils of sanding through a very thin veneer and maybe some tips to get rid of glue spots.
The TLA is supposed to be a solid body, no veneer. sanding should have been a breeze. It looks salvageable, easily by patching, leveling and painting. Intermediate by patching and staining, but a dark colour burst as Simon said is a great option.
Let us know how you get on.