My educated guess is that the grille was "married" to the case at a later point.
According to Frow's book, there were only 3 completed A-200s left after the factory fire. The remaining stock of cases were fitted out with the later type B motor, and classified as B-200. The 'flattened urn' grille was not introduced until 1917.
Incidentally, is the motor single or double spring? Frow mentions that double spring motors may have been used for an unknown time in 1913-14. Also, does it have a "tone modifier" (mute), and if so, what type?
Last Edit: Mar 30, 2017 3:04:30 GMT -5 by lucius1958
Thanks for the clarification and the extra info - I don't have that book; I am only just starting to learn so I don't know the answers to your questions either. Where would I look to be able to answer? I could take more photos.
We tried to open the back to take photos initially, by pulling on a little metal ring, but it seemed to be sealed either by rusty hinges (though they didn't look it) or maybe just the wood swelled over time. We didn't want to hurt it by forcing it open.