2 different sizes 1/10 brittania???

[ROrbers]

Hi there, please help me understand why there is such a difference between these two coins?
I deeply believe that both coins are geniue
1 coin: 2017 1/10 Brit ( pawn shop )     Dimensions: 16.48 / thickness: 1.15
2 coin: 2018 1/10 Brit ( bullion dealer ) Dimensions: 16.37 / thickness: 1.11
My weight is inaccurate but it indicated both coins 3.15 gr
Please help and thank you for the answers 😕
Regards
ROrbers

[Robda1986]

Royal mint Web site say it should be 16.5mm the smaller one I would be doubting 

[ROrbers]

The smaller one is on the right, I bought it from bullion dealer some time ago ... 2018

[vicamy]

I believe this is because these coins are bullion coins which are massively produced, so there will be some deviations and not all coins with the same measurements.

Most importantly is that you have genuine gold coins. And to be certain, it is better to have them tested out. 

[Peacemaker]

That 2018 does look a bit shady, the rays do not look as defined as you would expect, unless of course it has been around the block, which is likely but I would get it scanned to be sure

[danmc82]

Using a measuring caliper can be an inaccurate way to measure coins that have high rims.

The thickness of a coin is determined by the centre part, not the edge.

[ROrbers]

Thank you, gentlemen, for these answers.

[Foster88]

If one of them is a fake it’s a good fake.

I hope they both turn out to be genuine for you.

[Melon]

I went through an exercise on another thread not long ago of measuring a whole bunch of coins. The amount of deviation is crazy. I bet in the hand though you wouldn't tell a difference? First photo makes the difference look big, but judging on your measurements the two coins must not be aligned at the bottom as the difference is only a tenth of a millimeter. 

Very difficult to accurately measure coins. Just looking at the photo, you've not got them lined up at the same place on the callipers for example - it should be the bottom bit used for measuring. 

If they weigh the same I think you're probably fine. Have them checked if you're not sure. 

[ROrbers]

I will try to take better pictures tomorrow, and I will also try somewhere to check them in my area on some device ...

[Toddie]

I'm sure there's someone on the forum who have a XRF who'd test if you covered the postage. Of course depends on how comfortable you are doing that. Otherwise try your local coin/jeweler. Good luck.

[ROrbers]

Unfortunately, I couldn't done better photos today...despite this, I am still convinced that these coins are fine.
I will try to confirm that on some device, if I do this I will definitely add a post here.
Regards
ROrbers

[vicamy]

@ROrbers not sure if you are in London area? If yes just give me a shout. I have a sigma precious metal verifier you can use to test the coins. If not, I think you can try your local pawn shop or jewellery dealers for help. Good luck 👍😊

[ROrbers]

Hi  vicamy , Thank you very much for this offer  I don't live near London area, but I should be there in April and June. If so, I will contact you. Thank you

[vicamy]

36 minutes ago, ROrbers said:

Hi  vicamy , Thank you very much for this offer  I don't live near London area, but I should be there in April and June. If so, I will contact you. Thank you

👍

[fehk2001]

15 hours ago, vicamy said:

@ROrbers not sure if you are in London area? If yes just give me a shout. I have a sigma precious metal verifier you can use to test the coins. If not, I think you can try your local pawn shop or jewellery dealers for help. Good luck 👍😊

i know u can run very fast  😁