Composition

Aside from testing the metal, does anyone know how to tell the difference between the .925 version and the copper nickel version of this coin? No paperwork came with it either. 

im confused, you bought this coin? (Assumption due to „no paper work came with the coin“) Surely you know which version you bought or at least thought you bought?

Is it a case you purchased the silver one (more expensive) and now think someone might have tricked you into having the copper nickel version? Or is it the other way around, you bought the copper nickel version (cheap) and are now thinking it could be silver?

If you post a photo, told us how much you paid and which one you think it is, I am sure someone will be able to tell you straight away if it is silver or copper nickel.

base on density numbers cupro-nickel should be ~10% thicker at same weight and diameter.

How do you do that with only one coin and no idea what the thickness should be? Besides, as this post says, the measured thickness could be the same.  https://en.numista.com/forum/topic169540.html#p1296599

Maybe this will help you - tissue test is easy to perform if you have other coins (that you are sure for the metal: one silver, one CuNi) for reference:

  https://en.numista.com/forum/topic73444.html

Thank you for your responses. I apologize that I wasn’t more clear. I won the coin in a live online auction. (WhatNot) so I don’t have the coin in hand yet. It was advertised as being silver, so I expect it to be. I will get a refund if after I get the coin and it’s not silver, so I’m not worried about that. I was surprised that when I looked up the coin on here that it says that the Cu Ni and the .925 versions of the coin are both 28.28g • 36.61 mm. no thickness listed. 

From what I can tell there aren’t any markings on the coin to indicate if it’s .925. 
I am just curious if anyone knows how to tell without testing the metal if it’s silver or not. I will just patiently wait for my coin to arrive and have it tested. 
N#312727 and N#43210 

MMowiec

Maybe this will help you - tissue test is easy to perform if you have other coins (that you are sure for the metal: one silver, one CuNi) for reference:

  https://en.numista.com/forum/topic73444.html

thank you! This thread was helpful! I’m new to using the forum and tried to search the question before I posted my own but I couldn’t see where I could do that. 

 Also top right of page - 

it is set to Catalog but can be changed also to 

Numista number / Literature / User names / Forum 

there are numerous “silver tests” threads in this forum, you could search for some of those.

Not always but for me a lot of the time these type coins the difference will be the silver one will have a Proof/cameo finish vs the other ones a basic business or a proof-like finish to them setting them apart distincly.. now that’s not always the case but appears that may be in this coin. I’m sure I’m about to get dog piled by all the fact checkers here but that’s fine I’m still learning too if that method is flawed for some coins.

I have been buying from Whatnot for 2 years now and have only received one non-silver coin like that(I figured it out the same way as above explanation).. but the seller was quick to offer my money back or another coin of equal value.