Hi, Johann Friedrich Ludwig Jürgens, born in 1839, master 1864-1870, died in 1870. Bude Markt 7 Warden Georg Friedrich Schwartzkopf (1840-1918), Warden 1866-1871 I am not sure of the warden's mark. It is more shield-like with a tip at the base, than the two versions shown in Kommer's book. Best reg...