How to tell if it's a proof strike ?

I have this
http://www.ngccoin.com/poplookup/WorldCoinPrices.aspx?category=30977&worldcoinid=92100&FromSearch=true
Which when I b

  It is VERY shiny - and normally comes in a case. There are images and details ...

 Such as on this Topic see my reply Posted: 28-Apr-2012
https://en.numista.com/forum/topic6717.html

 Or this Topic - the middle coin of the three in a row (seen through the plastic case) ...
https://en.numista.com/forum/topic10068.html

That is a beautiful coin...I've got to get me one of those.

Verweis : bam777That is a beautiful coin...I've got to get me one of those.

 There is one for $50 (Approximately £31.87) on eBay from Israel - Item number: 320952757578
Does not look like Proof to me though, and the Certificate shown doesn't (I think) say so.

Thank you for the information...I've spent a lot on coins recently...I'll have to wait!

I'm looking to swap it for the right coin/s I really want..
Ceylon stiver/ rixdollar
Sri Lanka anchor dollar
Bahamas penny 1806
Imperial British east Africa (Mombasa) 1 pice
Ionian islands 30 lepta/ or oboli coins
Any Gibraltar quart/os

Proof coins have a frosted relief, UK proof coins the queen's head looks frosted