RF Coaxial switch
50 ohms. BNC connectors.
Bistable impulse commands @28V-DC (15V minimum)
Coils 13 ohms. The active coil is disconnected on switching (<50 ms). See the wiring on the bottom photo.
Weight 210 g. Dimensions : 66x60x36 mm.
It does not look as brand new because of a rather "poor" storage in my shack but it has never been used.
Look at the serial number : Number #1 ... Incredible!
Price : 20 euros + shipping.