Anyone have intel on this

[Devildog]

Hello all,
Could anyone tell me what this means? 800 over 500. It is stamped on both the item and it's handle?

Per usual thank you for any education you may share with me.

CHEERS!!

 

[Shark]

It looks more like 800 over SDO. 800 silver is usually an European mark. @nickvc would be the one to ask or maybe @galenrog .

 

[Darkthirty]

Hello all,
Could anyone tell me what this means? 800 over 500. It is stamped on both the item and it's handle?

Per usual thank you for any education you may share with me.

CHEERS!!

https://www.925-1000.com/a_Standards.html

 

[Devildog]

It looks more like 800 over SDO. 800 silver is usually an European mark. @nickvc would be the one to ask or maybe @galenrog .

I believe you're on to something. Found my loop finally. Have a look...

 

[Shark]

Where sterling is 925 silver or 92.5%, this should be 800 silver, or 80% silver. It can be ran as typical sterling.

 

[galenrog]

I agree with Shark. It does appear to be S D O. Poorly stamped, at that. He is also correct that it can be run as sterling, if that is the route you are headed.

Sorry, do not know the maker. I did a bit of looking at a few antique sites in Europe, but failed my very limited search.

What is the item? I can not tell by the images.

Time for more coffee.

 

[nickvc]

Sorry I’m late to the party but I think you have your answer already , I believe it’s SDO which is a makers mark that’s well worn and 800 silver is fairly common and is used in many countries and as the US has many immigrants going way back from around the world I’m not surprised you found some of it.
It’s possible it may have value as an item but a picture of the item would give us a better idea .

 

[kurtak]

Hello all,
Could anyone tell me what this means? 800 over 500. It is stamped on both the item and it's handle?

Per usual thank you for any education you may share with me.

CHEERS!!

As others have said it looks like 800 (80%) silver to me

Where sterling is 925 silver or 92.5%, this should be 800 silver, or 80% silver. It can be ran as typical sterling.

He is also correct that it can be run as sterling, if that is the route you are headed.

Sterling (925 silver) can be run "direct" in a silver cell - it will just corrupt the electrolyte with copper sooner then with cement silver anodes - which only means you ether need to change out the electrolyte sooner - OR - start with MORE dissolved silver ions in the electrolyte so that it takes longer to "up set" the balance between the silver ions in the electrolyte & the copper ions in the electrolyte

In other words - copper "co-depositing" at the cathode in the cell does not start to happen until the balance between the silver ions in the electrolyte & the copper ions in the electrolyte get up set

So (as an example) say you are running cement silver anodes (which should be "about" 985 silver or better) & say you make your electrolyte with 100 - 125 grams dissolved silver per liter of electrolyte - you can run those cement silver anodes "relatively" longer then running 925 (sterling) anodes because the higher copper in the 925 will up set the silver/copper balance quicker then the 985 (plus) cement silver anodes

However - if you up the amount of dissolved silver in the electrolyte from 100 -125 grams per liter - to say 250 - 300 grams per liter you can run 925 (sterling) anodes longer because the electrolyte can "take on" more copper ions before upsetting the silver/copper balance in the electrolyte

With 800 silver - the copper content is so much higher then 925 that in order to (effectively) run it direct in a cell you would have to have A LOT of silver dissolved in your electrolyte &/or change the electrolyte out VERY often

You are better served to dissolve the 800 & then cement the silver out of the silver(copper) nitrate & pour cement silver anodes

My point is that you can run 925 silver direct in a cell - not so much true with 800 silver

For what it is worth

Kurt

 

[galenrog]

Kurt, thank you for reminding me that just because I can do something does not mean I should.

Devildog, I am still curious what your item actually is. And its condition.

Also, I sent your images to a nephew in Europe. He may, or may not, be familiar with the markings.

Time for more coffee.

 

[Alondro]

Upper left of the first picture. Looks to me like brass showing through worn plating.

 

[Martijn]

Upper left of the first picture. Looks to me like brass showing through worn plating.

Well spotted