This was previously posted within a discussion of another photo.

Here are my Swiss bayonets.
From oldest to newest (top to bottom)

M1889 Swiss bayonet for Schmidt-Rubin Rifle Models 1889, 1896/11. This has not been factory refurbished to add a rivet in the fuller to aid in the scabbard retention. Manufactured in 1893.

M1899 Swiss bayonet for Schmidt-Rubin Rifle Models 1911 (infantry) rifle. A 'ramp' was added on both sides of the blade in the fuller to assist with the scabbard retention. Manufactured in 1916.

M1906 sawback bayonet. This was a transitional bayonet using the older Vetterli sawback blade with a 'newer' style Schmidt-Rubin handle. The blade on this one is just under 19" long. I do not know when this one was manufactured, but it should be safe to assume it was between 1906 and 1914.

M1918 Swiss bayonet for Schmidt-Rubin Rifle K31. This bayonet was manufactured in 1934.