It appears to have been a part of production rather than a chip.
VINTAGE FENTON CARNIVAL GLASS 5 1/2” Marigold PEACOCK AT THE URN COMPOTE (4MEC)
Vintage Fenton Carnival Glass Basket
Vintage FENTON Carnival Glass 8.75" Amethyst Ruffled Bowl DRAGONS & FLOWERS
Vintage Fenton Carnival Glass Bell Faberge Pattern 8466 Iridescent Amethyst 6.5"
Vintage Fenton Carnival Glass Swirl Desk Clock Iridescent Handmade USA Signed
VINTAGE FENTON CARNIVAL GLASS 5" MARIGOLD ORANGE TREE PEACOCK AT THE URN COMPOTE
