German for the Spanish market, first half of the 19th century. 7” d.e. blade with grooved edge ricasso, etched in foliage throughout. The forte with an inscription perhaps RATHBONE.  See Armas Blancas en Espana, color plate 16 for an identical example identified as German monteria knife made in Solingen by A & E Holler. That maker is recorded 1939-69 and almost certainly made this knife during that period. Plug bayonets were popular in Spain for hunting, where a musket could be quickly be converted into a spear for self defense, particularly against boar and bear