As far as I can tell the guarantee mark is a frontal face image with an 8 on the left an a 5 on the right.
The standard or title appears to be a rooster with the number 1 by his feet
I can not make out the makers mark, maybe N I or L with 2 stars at the bottom with something in between the stairs , it also has something at the top of the diamond
From my research this silver may be from the 1798-1809 period.
The silverware also has a crest / coat of arms that may be helpful in identifying this sets owner if it was a custom set, and silverware pattern and silversmith / manufacturer.
If you require pictures of all the different knives, spoons, forks etc. please let me know. The set is very heavy.
Any and all help would be greatly appreciated. Thanking you in advance.
Mark Daley

