Recently pieced together this old pneumatics set from 1984 from a used lot so I thought I would compare it to some of my more modern pneumatic sets : r/lego
LEGO 8851 Excavator Set Parts Inventory and Instructions - LEGO Reference Guide
LEGO Technic Pneumatic Excavator 8851. - YouTube
Technicopedia: 8851
LEGO® Technic 8851 Excavator – LC-jrx
Technicopedia: 8851
New - Old Stock Vintage LEGO Technic 8851 Excavator - New | #1726395787