@cdarwin I made a fact check because I don't believe posts without sources (too many fakes in social media).
It's real, went viral in 2017.
Rosemary Duffy's son found her old photo (1974) and copied the poster using a projector tracing the letters. Then they staged the photo according to the old template, it was not part of a rally like in 1974:
https://www.pennlive.com/news/2017/03/pa_woman_is_a_living_parallel.html
Here an interview with her: https://www.pressreader.com/usa/pittsburgh-post-gazette/20170706/281659665070313?srsltid=AfmBOorfoe1RdI1e7IJic3sdj3GSsRkO24U-AFVjuba2J6SvMV5FTI5u
pennlive · Pa. grandma is a living parallel between Nixon and Trump - and now a viral hit on Twitter