Price-wise, a decent solid-top student model starts at $300 whereas a concert model starts at about $2000. Upon inspection you’ll find that superior building materials are used to produce a concert model – deluxe machine heads, real bone nut and saddle, rosewood with an often beautifully figured grain pattern, and soundboard material with a tight and uniform grain pattern from the finest quarter-sawn wood.
Looking at the label may also provide some clues. A concert guitar will often, but not always, bear the handwritten signature or initials or stamp of the master builder.