Help with silver marking, possibly from Bergen Norway

[bdsawyer]

I found a cup and plate, both are marked 13 1/4 which is .828 silver. It also has a mark that looks like 7 cannonballs, and the maker mark of HD. I believe it is a pre 1900 piece of silver from Bergen, Norway. Was hoping someone had a reference that could possibly ID the maker. Thank you.

 

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[tamrock]

Anyway you can take a more focused picture of what looks like a pictorial mark at the 3 o'clock position? Also it be nice to see a photo of the entire piece. They do look like old marks to me.

 

[bdsawyer]

Sorry I should have posted the whole thing. It's a 10" tall communion chalice or cup, with a small communion plate. Here are a few more photos.

 

[bdsawyer]

The five marks shown are:
13 1/4 twice, HD twice, and the 7 cannonballs once.

 

[Mackaydon]

The number marks (ie.`13 1/4) are supposedly marks that were used before 1890 and indicate the purity of silver.
13 /14 indicates 13 1/4 'lodig' (13 1/4/16) roughly 828/1000) which basically is just a fancy, foreign way of saying it's .828 silver. After 1890, they began using actual purity marks (ie. 830,925, etc.)
Source:p.thoresen spoon 13 1/4 found in my mothers stuff cant find
Don....

 

[Mackaydon]

The seven dots represent the seven hills that surround the city of Bergen - they are also found on the old Bergen city silver mark, itself taken from the municipal arms.
Don.......
PS: Source: http://mysaga.net/vikingsalts/Marks/marks.html

 

[bdsawyer]

Thanks don for the references, I am going to keep digging to see if I can figure out who HD was.