10 Quetzales

By the mid-1990s, Banco de Guatemala had been issuing notes through Oberthur's Rennes facility for over a decade, a relationship that gave this series a consistency of paper quality and intaglio depth unusual among Central American issues of the period. The Q10 pick 91 belongs to a long-running design sequence that stretched across multiple printers before Oberthur consolidated the contract — making it worth tracking which printer handled which date ranges when building a complete run.

The security thread on this type is unwindowed, a detail that distinguishes it from later Guatemalan issues that adopted foil-strip technology in subsequent decades.