Pair of Swiss bayonets.
First one is a M1899/11 for the K11 (1911) rifle (will not fit the K31). Waffenfabrik Neuhausen manufacturer. 448937 serial number (if I'm reading the s/n chart correctly that should mean the gun this was matched to was mfg in 1917). Includes scabbard and strap, no frog.
$105 shipped.
Second one is a M1957 for the Sturmgewehr 57 (Stgw. 57). Wenger manufacturer. 204003 serial number. Scabbard is marked with a "66", not sure if that indicates 1966 but that would be the right time frame. Includes, scabbard, no frog. Extremely good condition, no real wear except for from the retention mechanism inside the scabbard, may be unused.
$65 shipped.
Happy to take additional pics or answer any questions. USPS money order preferred for payment.