I'd place that one at late 40's early 50's cause the drop front boxes didn't last IIR.
Sitting two weeks is partly it a narrower audience for the vintage boxes, and probably the season (many have spent their "mad money" on Xmas one way or another)
For a 2 hour drive make sure you arrange a time and verify with him you are on your way and he won't sell out from under you. (sitting 2 weeks probably not a huge risk but I got screwed on a vise 2 weeks ago, and I was ON MY WAY and only 30 min away. ******* sold it as I pulled up, and couldn't understand why I was pissed...)
it HAS been sitting 2 weeks, and it DOES say "OBO" so work its condition. ask about any rust before you get in the car... Then make an offer...
To the right buyer, it could probably sell for asking price, but he could wait 6 months for that guy...