This is a Celtic gold stater of the Whaddon chase variation that i found just over 2 years ago here in the UK with the standard T2.
Please note this is not mine as i have it one another pc that i dont have access to it over the weekend but it will give you some idea on what they look like.
It's a Whaddon Chase stater, struck by the Catuvellauni tribe c.55-45 BC. The Catuvellauni, 'men good in battle', were one of the two main north-Thames tribes, concentrated in Hertfordshire and including parts of seven surrounding counties. They were probably the most powerful tribe in Britain when their king, Cassivellaunos, commanded the British coalition against Caesar in 54BC. Mint-sites at their capital, Verlamio (St Albans), and maybe Braughing.
What is interesting about this coin is the farm that we had been detecting on has produced about 15 of these exact coins within a 50ft radius this amount in such a small area indicates only one thing a hoard,but we have been back a few times and found a few more in the same location but as yet we cannot find the main source of them,with so many high quality gold coins in close proximity usually indicates 2 possible theories either a purse drop or a hoard in say a pot or some other container but in the 1st option you would usually find what we call the metal purse bars that held the leather purse to the owners belt as the leather would have rotted over time and hence this is why we suspect the hoard being in a non metalic pot ie a ceramic pot.
So after the crops come off later in a few months time it will be back again to the same farm and see if his deep ploughing has shifted some more,the farmer has a US Cat tracked tractor that has massive amounts of power hence he can plough so much deeper and with each new ploughing he takes a little more off the top of the pot and scatteres the coins around hence we have the saying a 'scattered pot hoard'
Will we ever find the main location i cannot answer that one we of course live in hope and thats the fasination of this great hobby of ours,and i have to say we over here in the UK take it so much for granted and we are so very lucky that our history goes back 1000s of years and the quality and the wide ranging coins and artifact is truelly amazing but its only the fact that modern metal detectors are able to find and locate these wonderful works of craftmenship so that everyone can enjoy them for the future other wise they still would be in the ground.
Regards from the UK
Rick