In my opinion......to get that kinda money......it'd have to be at the right time to the right person. 99.9% of Harmony/Silvertone collectors wouldn't even pay close to that.
mint harmony's come up from time to time, lower end models have never sold for that much.......maybe if you had a mint Jupiter or H-49 Stratotone.....that would still be top dollar for mint.
Harmony made guitar are going up in value and are starting to get appreciation for being well made guitars with great tone! A bang for the buck compared to the higher end vintage guitars.
Anyway, it's a cool guitar in great shape. And if anyone offers you that much for it....sell it