Narrow side view, 4 soldering lugs are visible, annotated HF, ground, and +-24v https://assets.chaos.social/media_attachments/files/113/787/259/576/518/514/original/7addfa524d6b80ec.jpg
Thanks @altomare for this very interesting antique oscillator. It's massive! It's from 1971, made in France by "Quartz et Electronique" a dead company that was acquired by Alcatel.