I remember the styling but it was around a while so
cant comment beyond that.
Good chance it was an institutional set also. They were sold through
the distributors NOT the dealers. Had different models & looks.
In the 90's they also had a specialized school set that you could
get add ons for like computer inputs. Dont remember what they
called the line.
Sold without a labor warranty. If you got a lead you called the
distributor, they made the sale & you got to do set-up & sell
a labor warranty if you wish. You would also get other bones thrown
to you especialy if its a big sale like a 50 room hotel.
Often a school will just by regular sets, we had an increase in
sales at the end of the fiscal year. All the gov agencies had leftover
money to dump fast.
Once when camcorders were big $$ the prison ordered 12 of them
complete with many accessories. I asked what they did with them & he
told me 3 or 4 would be used & the rest were loaners ! They loaned
them out to the bulls for vacations etc. Your tax $$ at work

BTW that was NOT in N.H. !
73 Zeno