Timing Pulse Generator Model 140 clone.

The La Sesenta y Siete, 140 Timing Pulse Generator produces repetitive pulses at intervals of .005 to 20 seconds. Period and duty cycle may be controlled internally or by applied control voltages.

More info here: https://www.lasesentaysiete.com/ and here: https://www.muffwiggler.com/forum/viewtopic.php?t=208349