# Is an apostrophe with a decade (e.g. 1920’s) generally considered “incorrect”?

I typically don’t use an apostrophe with plurals in any situation, but I always assumed that the use of an apostrophe in constructions like acronyms:> Forty BA’s were given out to students this year.or numbers:> Though the greatest period instability occurred during the 1950’s when. . . .was more or less ok. I would personally use *BAs* and *1950s* here, but I've never thought the apostrophe in this case was necessarily “incorrect”. What say ye?

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