I am trying to figure out who made this cutlery set and get a better idea of the date. From the forums I have been able to decipher a bit of the information, there are a total of 6 hallmarks - 1) a plum of feathers, 2) lion rampant below a crown, 3) a flower below a crown, 4) a date letter d below a crown, 5 a letter o below a crown and 5) some odd small mark that seems to be the letters IZ but hard to make out as this mark is very small. From what I understand number 2 is the finesse mark, stating that the set is .934 or higher, number 3 is the mark for Dordrecht, and number 5 is a duty hallmark from 1807... Any help with the rest would be greatly appreciated. Many thanks!

