Here are the why and how, also the the time, an excerpt and the site:
The case of Nippon or Japanese Porcelain marks is a bit more peculiar. The word "NIPPON" is the official name of the country of Japan and Japanese makers and trading companies initially marked their porcelain with the name Nippon. However, in 1921, the US Congress requested that Japanese Customs Authorities change the name to JAPAN. Therefore, Porcelain and China antiques that are marked "NIPPON" were made prior to 1921 and items that are marked "JAPAN" were made after 1921. Furthermore, most Porcelain and Chinaware imports from Japan were rarely marked with the actual manufacturer's mark.
* http://www.marks4antiques.com/Identify-Porcelain-Antiques.htm
It is most likely the stamp of the manufacturer
Pottery with a three-leaf shamrock stamp is often associated with Irish artisans and pottery makers, particularly those from Ireland. One well-known producer is Belleek Pottery, which is famous for its fine china and uses the shamrock as a symbol of its Irish heritage. Additionally, various local ceramic artists might also incorporate the shamrock stamp in their designs to celebrate Irish culture.
* Polish Pottery | Polish StonewareToday, artists decorate their handmade pieces using paint brushes and the same unique punch or stamp techniqueused for centuries. Polish pottery continues ...** http://www.potterygourmet.com/
the diamond stamp is the earliest HaegerPottery mark. it was used in the 1910's thru the 1920's. a green, diamond shaped sticker with the words "haeger potteries" and "dundee, illinois" replaced the diamond stamp.
Antonia Barry, or AntB marks hers with an ant stamp. But not the word ANT.
Franz Porcelain sells everything from necklaces to decorative vases to dishes. The pieces are inspired by Chinese pottery and are each marked with a signature Franz stamp.
It is most likely the stamp of the manufacturer
Pottery with a three-leaf shamrock stamp is often associated with Irish artisans and pottery makers, particularly those from Ireland. One well-known producer is Belleek Pottery, which is famous for its fine china and uses the shamrock as a symbol of its Irish heritage. Additionally, various local ceramic artists might also incorporate the shamrock stamp in their designs to celebrate Irish culture.
Is that stamp only saying "JAPAN"? 1920s or later. However, images would be good to find out more. http://y-smart.com
Stamp act
* Polish Pottery | Polish StonewareToday, artists decorate their handmade pieces using paint brushes and the same unique punch or stamp techniqueused for centuries. Polish pottery continues ...** http://www.potterygourmet.com/
the diamond stamp is the earliest HaegerPottery mark. it was used in the 1910's thru the 1920's. a green, diamond shaped sticker with the words "haeger potteries" and "dundee, illinois" replaced the diamond stamp.
The stamp act required all documents to be on stamped paper and have a stamp, which had to be purchased. Passed in 1765.
The stamp act required all documents to be on stamped paper and have a stamp, which had to be purchased. Passed in 1765.
The blue crown stamp generally indicates that a stoneware pottery piece was made by one of over 200 Dresden potters registered to use the stamp. It is often counterfeited, so there is no guarantee your churn is from Dresden simply from the stamp.
The required postage for a first class letter from California to Florida is one stamp. As of 2014, a stamp costs approximately $0.49.
The act required that many printed materials in the colonies be produced on stamped paper produced in London and carrying an embossed revenue stamp.