This is from: "Diario mercantil de Valencia January 26, 1838 page 4.
"Guitars of new invention, which consist of two harmonic tops,
and the fingerboard is carved in such a way that it is played very
smoothly. Its construction makes it produce the voices of a piano,
and the trebles in particular are
equal to any piano with good voices, which
until now have not been known to have guitars
of such superior qualities. These have been
suggested and approved in the highest degree by the
professor of said instrument, Mr. Jose Rolly,
the same who has confessed to finding them superior to those he has seen in Paris. Its author Luis
Reig lives at Calle de la Bolseria No. 8 old
and 25 modern, where they are for sale"
Original Spanish text:
"Guitarras de nueva invencion, las que constan
de dos tapas armonicas, y el diapason labrado
de manera, que se ejecuta con mucha
suavidad. Su construccion la hace producir las
voces de un piano, y los tiples en particular son
iguales a todo piano de buenas voces, la que
hasta el dia no se han conocido haya guitarras
de tan superiores cualidades. Dichas han sido
insinuadas y aprobadas en sumo grado por el
profesor de dicho instrumento Don Jose Rolly,
el mismo que ha confesado encontrarlas supe-
riores a las que ha visto en Paris. Su autor Luis
Reig vive calle de la Bolseria num. 8 antiguo
y 25 moderno, donde se hallan de venta."