That BMA sticker means it's a '72 at the earliest. The sticker represented a 'safety' consortium of all the American bicycle manufacturers - except Schwinn. Who's quality was so far above the competition's at the time that they didn't need a sticker advertising that their bikes were 'safe' and 'quality'. As a hint, the only BMA stickered bike we ever sold at the shop was Columbia, which was the best made of the cheapie brands. Everything else was department store.
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Syke
“No one in this world, so far as I know — and I have searched the records for years, and employed agents to help me — has ever lost money by underestimating the intelligence of the great masses of the plain people. Nor has anyone ever lost public office thereby.”
H.L. Mencken, (1926)