Hello, Steve. I'm sorry I can't help you with the silver marks, but if you are wondering about what is engraved at the bottom, I read it like this: JCG & EKJ (silver mark PL) 2 Sucher Shaale vog 19 lod 2 qv i.e.: JCG & EKJ 2 sugar cups weight 19 lod 2 qv (= 19 lodd 2 kvintin) (1 lodd = 14,62...