The Spanish monitor Puigcerda (named for the city in Catalan and the only monitor ever to serve in the Spanish navy) was commissioned in 1875. She displaced 553 tons and carried three bronze muzzle-loaders, one of 12 cm and two of 10 cm. After brief service during the Third Carlist War, she was laid up until the Spanish-American War in 1898. Re-armed with two 16 cm guns and two 12 cm guns, she patrolled the Vigo River during that conflict. She was sold out of the service in 1900 and converted to a civilian steamer.
Puigcerda is another of the excellent offerings from Paper Shipwright. Designer David Hathaway's models are well regarded for their fit and detail. Despite their small size and relatively low parts count, builders should have some experience working with card due to the number of very small parts.
My kit was a laser reprint sold by Paper Models International; their website is still up, but hasn't been updated in ages. The kit includes several pages of parts, instructions, diagrams, and railing jigs.