Water Bird

Hello everyone, I happend to have a gold coin about which i have only less knowledge. I would like my fellow members here to please help me out. I will give you the informations about this coin. The inscriptions on its obverse is GEORGIV S V D . G . BRITTOMN : REXF : D : IND : IMP : Date on its inverse 1917 Please referr to this link to see a picture of the coin. The first coin is like mine except the date is 1917. (in the picture here it is 1920) Picture (i have attached a picture file too, incase the link doesn't work, please reefer the attachement part of this topic) I also noticed a difference in my coin from the picture on the above link. In my coin it is "BRITTOMN" without a colon. In the picture it is "BRITT:OMN" (with a colon between BRITT and OMN) Hope i have explained about the coin well so as to analyse it. My questions are; 1) Is it a rare coin and how much money it worth? 2) Is it a fake coin? (Please not the absence of a colon between BRITT and OMN on its obverse. Is it a problem?) 3) Inverse of my coin has some scratches, is it going to affect its value? Please pardon my ignorance help me to quench my curiosity. A lot of thanks in advance. Regards Waterbird

Was busy for a couple of days. Finally scanned the coin. Hope this would be helpful to arrive at a conclusion. Please, Please help me out

sorry. will upload a decent picture asap.

And guys just to confirm as i mentioned earlier in my coin it is BRITTOMN without a colon. But in all the specimens i saw online there is a colon between BRITT and OMN (BRITT:OMN) That only means mine is just a fake. right? (the head seems similar to me, my coin and the pictures on the net) I want to confirm because i actually took this coin to sell it out (urgently in need of money). Then thought of this side, started browsing about sovereigns. So if it is not a sovereign i just want to sell it out tomorrow itself. Please dont think i am boring you

I found your answers very much helpful. At least i am relieved from the chain of expectations! Anyway i took this picture on a friend's camera. So just uploading it. Now i pray this metal is gold itself! Just see and if any opinion changes, that would be a miracle. Thank you guys, thank you for spending some time for me.

Thank you guys. I think its the camera that makes it unlikely to be gold. And in the picture OBVERSE IS A MIRROR IMAGE. I mean my camera is a webcam. The letters are not reversed as it is visible in the picture and the head too is a mirror image. I am saying it just if you came to the conclusion based on that. A last hope

sorry i didn't get you Please please explain..

Picture of obverse

Picture of inverse. Thank you for the guidlines. I forgot to press attach this file.

I am attaching the inverse too. Please see it. I am not sure whether it is visible in details. inverse is pretty much loaded with some scratches. There is no C below the engraved horse. only 1917 and something like BP or something on the year's right top corner.

So its half sov. Its 4 grams and 19mm diameter. pardon my ignorance. i found it loosely 20mm.

Thank you for the reply declanwmagee. The diameter of the coin is 2 CM. I am attaching an image too. Please have a look at them and let me know what you think. Thanks again.