Pulltabs are our friends! They are like little historical trail markers! Us inland Waterbabies get pretty excited when those mid 60's tabs show up in the scoop!
Those years were the Gold wearing years and the tab says 'Nobody has EVER swung a coil in here!' So its a great post regarding makes and ages of the pulltab...
Besides the water hunters, they are extremely helpful for a guy to decide what to focus on in a park or sportsfield or curbstrip even....lots of early tabs but no silver? Focus on digging the Gold tones...
Pulltabs are important reference signals for how to hunt and age a place and its Human activity level at a certain point in time....