Sorry Lux, I did look at a few sites but came up empty. The first stamp really looks like a lion passat, marking the purity. The next two may be Date codes possibly. I did notice the dutch used some calligraphy type letters for dating, that would just be a guess. Really wish I could make out the last mark. Again sorry I will just have to back burner this and hope that in my future surfing I will stumble on something for you.