This is Dragão 092 for Coimbra Portuguese guitar string set. It is a complete string set with 12 strings, silver plated basses. The Portuguese guitar from Coimbra tunes a tone below the Lisbon guitar (A-G-D-A-G-C from high to low). Made in Portugal.
Strings with the Dragão brand are produced in Portugal by Novagi, a company with extensive experience in this field (over 90 years). It produces a wide variety and is the benchmark for traditional Portuguese instrument strings. It also produces single strings, nails and various picks.