You don't see many L-12 models from any year, and especially not the earlier 16-inch models like this one. One reason is that the L-12 didn't appear in every Gibson catalog, especially not the smaller abbreviated versions. Another reason is that the L-12 was more expensive than the similar L-7 and L-10, although less expensive than Gibson's flagship L-5. This example is from the last year the L-12 was offered in the smaller 16 inch size,and since it had first appeared in a catalog in 1932 this version had a very short run.
It's original throughout, only the pickguard is missing. Original tuners, bridge, and tailpiece, with original finish everywhere with no signs of touch-up and no cracks. The hardshell case is from the same approximate period and although it is an excellent fit it's probably not the original case supplied by Gibson.