Not a good idea to insult and rile up us older FReepers (I was born in 1946). Just sayin'.
I used to collect stamps when I wasn't running my Lionel trains or putting together models of the Snark and the B-58 Hustler.
What years were 2 cent stamps used? When World War I ended at the end of 1918, the rate was lowered to its pre-War level of one cent. Postage was raised briefly from 1 cent to 2 cents in 1917-1919 and in 1925-1928; the conclusive raise to 2 cents was in 1951.
The chart I saw said that the postage for the first ounce of a first-class letter was three cents from 1932 to 1958. Two-cent postage was a *long* time back.
Usually on any thread about postage-rate increases, you’ll get old-timers commenting about how cheap postage used to be. (I’m old enough to remember 4-cent first-class postage myself.)
Never got into stamp collecting myself, though I put together quite a few models. Cars, planes, ships, all kinds.