Antique Vintage Clear Glass Cow Butter Stamper. So this was the interior part of a butter stamp. Would have possibly been glass or wood surround. I personally think that it looks really neat also like this! Cow design on the bottom. Great shape, no chips or cracks. Size is 5 1/2" x 3 1/2". Great decor piece for the rustic farm fresh look. Only 1 in stock to start. Original antique piece.