BAHAMAS FLAMINGO COINS INFO WANTED

[SILVERFINGER]

Hi I am after as much information on these series of coins, mainly how to spot from a photograph whether or not the coin is one of the silver ones I am after or the cupro nickel ones, I have seen some nice ones lately at very reasonable prices, but I don't want to end up with something mis-described and have the hassle of sending it back nor buying something in its original box only to find the coin has been swapped for a cupro one.

Have looked at the below websites which are a big help, the Numista one wasn't much as the picture they have on there of the silver coin looks like it has a blackened background, and the cupro pictures look like whats being sold as silver ones out there.

I have seen ones with the original packaging saying that they are proof coins, but they look like the plain silver ones according to Numistas site

http://worldcoingallery.com/countries/Bahamas.php

https://en.numista.com/catalogue/index.php?mode=avance&p=1&l=&r=bahamas&e=bahamas&d=&ru=&i=&ca=3&no=&m=&v=&t=&a=&w=&dg=&f=&u=&k[]=13&g=&tb=y&tc=y&tn=y&tp=y&tt=y&te=y&cat=y