1878 Pioneer bayonet, identifiable from the 1881 below by having four rivets attaching the grips, despite references in several books both the 78 and 81 only have a fuller on one side

Four rivets on grips

Mouth of locket shaped to accept the heavy saw teeth of the blade

SIG Neuhausen makers marks on ricasso, note fuller on blade. Cross guard serial number would have matched that of the issued rifle

Unmarked obverse ricasso and lack of fuller

1878 converted into "Musicians" side arm

Distinctive ears on the muzzle ring have been removed

Press stud has been ground flush with pommel, and the slot has been filled, other versions have no fixings at all with muzzle ring filled or never machined

1881 Pioneer, scabbard for this is identical to that of the 1878 above

Only three rivets on the 1881 grips

Again the fuller is only on one side of the blade

Maschinenfabrik Bern makers mark

1889 first model with plain fuller

MacshinenFabrik Bern makers mark

1889/99 with large diameter rivet in fuller that held the blade firmly in its scabbard, there is also a small rivet model and one with a machined "bar" across the fuller

Early versions had penetrating rivet, later ones (like this one) are welded

Rivet in fuller, Waffenfabrik Neuhausen maker

1889/11 or 1911 pattern bayonet. There is a machined ridge in both fullers to retain the bayonet in the scabbard, instead of the added rivets above

Ridge in fuller, Waffenfabrik Neuhausen maker

Ridge is in both fullers

1906, uses the blade of the 1878/1881 pattern bayonet with a new wooden grip later used on the 1914

Wooden grips, were first used on this model of bayonet

Solingen makers mark on this bayonet, more usual maker is SIG Neuhausen

Significance of numbers on the obverse ricasso is unknown, the cross guard serial number is that of the rifle it was issued with

M1914 Schmidt Rubin

1900 model, made by modifying a socket bayonet

Conversion entailed adding a new section with a muzzle ring onto the blade

Added section is crimped into place around the cruciform bayonet blade

 a new "pommel" has been formed from the socket end of the socket blade

M1918 Schmidt Rubin

Favor SMG spike bayonet

Uses locking system similar to that of the French MAS

this example is missing the locking mechanism itself

M1957 S.I.G.. stainless steel bayonet

M7 issued in Switzerland

SIG 530 

M70 current issue bayonet