Goofus Glass was a pre-cursor to Carnival Glass. Harry Northwood is credited with getting it started. It was so successful that most glass makers took up some degree of production. Many early pieces were advertised and sold as Pickle or Condiment Jars. Thin glass and rough rims are indications of early production. Later pieces were thicker and more finished. They were advertised as vases.
Unfortunately, the cold-painting process used to decorate the glass was subject to flaking and loss from handling and washing, so most pieces found today are lacking some or all of the original paint. In most cases the paint was flashed or sprayed on simply to highlight the general pattern elements, rather than detail them.
Some items on this page have the ORIGINAL paint, without touch-up or re-backing, as far as I can tell. Others have been touched up or completely repainted.