These are Grayhill 94HAC16
Rotary HEX DIP (Hexadecimal) 16 Position Switches
Contrasting color flush knob (gray against a red body with a black pointer)
Gold contacts
100mA @ 50V
Film covered for board wash
PCB solder pin through hole mount

9.91mm Square x 7mm tall

The more common 94HAN16 is the same, but lacks the contrasting color that makes these switches a Stand Out on your board.

Specifications: • Mechanical Life: 10,000 cycles • Make and Break Current Rating: 30 mA at 30 Vdc for 10,000 cycles of operation • Carrying Current Rating: 100mA at 50 Vdc • Contact Resistance: 50 milliohms maximum • Operating Temperature Range: -25°C to +85°C 

Materials and Finishes: • Rotor and Switch Body: Plastic, rated at UL 94V-0 • Contact Material: Copper alloy gold over 30 microinches nickel • Terminals: Copper alloy plated 150 microinches tin lead solder over nickel • Internal O-ring: Silicon rubber

These are factory new parts. They have never been installed and have not been recovered from manufactured electronic components.