(KO) HGSM-1003 C.P. Clare mercury wetted relay. SPDT. 20.6v, 2.2k ohm coil, PC mount. 2 amp @ 500 vdc contacts. 2" x 5/8". Mfg. P/N: HGSM-1003.
(KO) MWP-16172-1 Adlake mercury wetted relay. 33 ohm, 5 - 12 vdc coil. Octal base. SPDT - redundant contacts. High reliability for aircraft use.