Old Vintage "Smile you are in Baltimore" Pinback button circa 1960s to 1978, made by Larry Beck company that as of this date has been doing promo items for 50 years. It was bought in a collection. It is 2.25" around with light wear, nice overall shape. I would put this older beause it also has daisy eyes which are supposed to be black eyed susans--out state flower, and is made of tin. See my shop for more vintage pinbacks!
Check out my blogs all about vintage etsy finds
plastics : http://RetroChalet.blogspot.com
all vintage : http://VintageChalet.blogspot.com