MM:
Many of the pre-war Harmony Cremona archtops have integral tone bars. By this, I mean that the top of the guitar is hand carved (if you can see inside, you can see the chisel/plane marks), and the tone bars are one piece with the top, not added in later. Another way to look at it, is that they carved away, by hand, the only the wood that did not make the top plate or the tone bars.
I don't know if any other archtop builders, at any price, ever did that. I don't have the foggiest idea if it is better for tone, worse, or doesn't make any real difference, but it is true for more than one Cremona that I have seen.
A good site for the entire Harmony line is at:
http://harmony.demont.net/
If you look under the high end archtop link, you can probably find your guitar.
Kostas
P.S. I own two Harmony Archtops, both Patricians, one is a 1414, and the other is a 1415.