What is "white metal"? Let's find out!

Hi all, for a while I have been adding British medals to the catalogue designated as “white metal” as “pewter”, but I was never really satisfied with this indication. So I brought in two medals to test with an XRF scanner:

N#380545

N#445446

So now the question is if white metal (at least for this era when tin was readily available) should be listed as pewter as before, tin-lead (from the drop down), or any other type of medal. I'd like to hear your thoughts!

https://en.wikipedia.org/wiki/White_metal 

% Sn % Sb % Cu % Pb   Applications
   93     3.5      3.5       –       Light and medium internal combustion engine big-end bearings
   86    10.5     3.5       –       Light and medium internal combustion engine main bearings
   80    11.0     3.0     6.0     General-purpose heavy bearings (lead increases plasticity)
   60    10.0   28.5    1.5      Heavy-duty marine engine bearings, electrical machines
   40     10.0    1.5    48.5    Low-cost, general-purpose, medium-duty bearings 

 Whenever I buy a medal the seller lists it as white metal, 

so I prefer it to be kept like that on the page. Two of mine: 

N#151382 

N#242205 

 So in your second picture that appears to be White Metal as it 

contains all four - Sn Sb Cu Pb 

 Not looked up what is in Pewter. 

https://en.wikipedia.org/wiki/Pewter 

 'Pewter is a malleable metal alloy consisting of tin (85–99%), 

antimony (approximately 5–10%), copper (2%), bismuth, and sometimes silver'. 

 Symbols: 

Sn (85–99%) 

Sb (approximately 5–10%) 

Cu (2%) 

+ [Ag (sometimes)]  

 So in your first picture that appears to NOT be Pewter - Sn Sb Cu 

Yours has Sn Pb Cu instead. No idea what metal it is called. 

 Tin - Lead - Copper 

There is no “white metal” option in the drop down so I have been using pewter as a placeholder

 Yes it is not a choice on the menu - for some reason,

but I type in 

 White Metal 

in the Composition section for any page I create. 

 Maybe it should be added to the list - there are enough with 

that composition on here already.