7 String Acoustics

Wow, I hate to say this, but for me the badly out-of-tune lower strings (especially the way it goes way out of tune when he frets the lowest string), the fret buzzing (which, in fairness, may be due to the player rather than the guitar's action), and the intonation issues when he moves higher up the neck would not recommend that guitar to me at all.

That last one's VERY nice! Great flat-picking and a lovely, intricate tune.

But that's just it..it does have same basic E-Standard tuning with an extra bass string tuned to B.

a 48mm nut = 1.88976inches ... less that a Coastline 12 or Peppeino Artist.
If you ever get a chance to try one..don't avoid it, embrace it and tell us about it.

There are at least three configurations for seven string guitars.

The one mentioned above is the one made famous by George Van Eps; the one with the extra bass string.

Lenny Breau's seven string had an extra treble string. I'd guess it was tuned to A, but don't know for sure.

Then there was the seven string guitar used by Spider John Koerner on the Blues, Rags & Hollers and Lots More Blues, Rags & Hollers albums in the sixties. It still had six courses, but an octave G string was added to the regular tuned G. He modified a regular six string by putting a banjo tuner in the headstock.