#78 Duplex filletster and rabbet plane, 8 1/2″L 1 1/2″W, 3lbs, 1885-1973.
Excerpt for supertool.com
“This is another popular Stanley plane, on which the company built a great fortune. Nearly every workman of the time had one of these planes in their kits. This plane was so popular and functional, that it still is made today. Any handtool enthusiast should consider this plane, or one like it, be it a competitor’s or a wooden version, as part of his arsenal.”