Contrary to popular belief a Lid is not an ounce of weed. The coffee cans had a key like a sardine can and the Lid would be wound off the can. The Lid used to measure usually contained about 4 fingers of pot. People at that time didn’t have a triple scale to weight pot.Feb 9, 2006
What’s a lid? | 420 Magazine ®
www.420magazine.com threads whats-a-lid
And that coffee can lid full would equal 1 oz (more or less) of pot.
That sounds authoritative, but in my personal experience, the “lid” was the lid of small oblong tin of Prince Albert tobacco - maybe 1/4 ounce.
IIRC.