I think your tank is likely a 7x2x30 = 265. It's a fine tank, but likely not the dimensions you mentioned after measuring. It looks to be a mass produced tank based on the plastic frame at the top. It is neither easy or cost effective to produce plastic frames for oddball sized tanks.
Nice tank though! Take a few full tank shots so you can see your tank progress.
The guy on craigslist said he was given the tank from a friend. Near where I got it, there was a custom glassworks store which had aquariums,tables etc. The guy bought the trim seperate and mounted it.