For you information M&S & Wayne made 32 different versions of the Model 80. Not long after Wayne acquired the M&S company, they cut the number of models down to 20 different ones.
Most guys don't know about the Series numbers. Each of the 32 models were given a Series number. For example the Series 102-1 was a hand operated marine pump.
Your pump the 4B was the "Hanging hose pump with a high base, elevated flow indicator and a Gilbert & Barker meter and a 1/2 hour rated 3/4 hp motor.
If you are looking for more information about your pump see this page of my website:
http://petrolianacollectibles.com/wayne%2080.htmJack Sim