porcelainmarks.euc. 1600–1699blue · faienceThe source places this blue mark at the end of the 17th century.
porcelainmarks.euc. 1600–1699J AThe source associates these red and black marks with late-17th-century production.
porcelainmarks.euc. 1600–1699B.fThe source associates these red and black marks with late-17th-century production.
porcelainmarks.euc. 1600–1699black, red · earthenwareProduction is dated to the end of the seventeenth century.