According to worldbayonets.com, this is the sword bayonet for use on the 7 mm. Mauser M1916 Short Rifle. Also designated for use with the 8 mm. Mauser M1943 Short Rifle.
This example was made at Artilleria Fábrica Nacional, Toledo, Spain, probably in the 1920s.The M1913 bayonet was one of only a few bayonet types to utilize checkered wood grips. The scabbard is leather with brass mounts.
Adopted in 1913 as the Machete Bayoneta Modelo 1913, this bayonet was intended to replace the M1893 knife bayonet. However, with adoption of the M1916 Short Rifle in 1916, the M1913 bayonet was, instead, designated for use with the M1916 Short Rifle. It was subsequently also designated for use with the M1943 Short Rifle.
This bayonet has been referenced as both M1893/13 and M1913 depending on who wrote the material. If the bayonet was numbered in the correct direction on the ricasso, it is numbered "69119". If not, the number would be "61169". Your guess is as good as mine. The bayonet lug is operational. This bayonet definitely has the wear on the wood handle and ricasso to reflect its use as a weapon of war. The scabbard has a loose tip piece but has no seam fold, or tear problems with the leather. There is a number stamped on the scabbard throat, 104.R.8.41.
Unlike most of Europe, Spain maintained their neutrality through the entirety of WW1. While Spanish forces would have carried these bayonets with the standard issue rifle of the time, they were not used in direct combat during that period.
Please check out the photos to make a condition and value appraisal for yourself.