Interesting idea from another forum

[dooly]

Do you remember this strange coin i got in the lot of coins with the 1806 proof halfpenny and the double stamped 1772 halfpenny

 

 

well it has been said that it could hold a gold coin .. i poopood it at first but i have just done a few sums and i was wondering what you thaught

 

the "coin" is 21.01g a actual 1806 farthing should be 4.7g-4.8g .. so if there are two together it should be 9.4g-9.6g .. so there is 11.6g more than 2 coins together

 

in fact there should be almost 4 1/2 farhings in it ?

 

a 1806 farthing should be 22mm wide and 2mm thick .. this coin is 25mm at its widest and about 6mm thick ( only 3 farthings thick) .. ie: 14.1g leaving 6.9g which dose not work out !

 

So what could there be in the middle ?

a sovereign of 1817 Closet date is 22 mm and 8g (do not know how thick)

a half sovereign of 1817 is 19mm and 4g (do not know how thick)

A half Guinea of 1806 is 20-21mm and 4.2g And not very thick about 2mm

a 3rd Guinea of 1806 is 17mm and 2.8g also not very thick about 1mm

 

So all could fit and if we suppose there are only 2 coins and we take 2g off for the copper edge we are left with 9.6g

 

conclusions:

One sov at 8g leaving 1.6g

two half sov's leaving 1.6g

two half Guineas leaving 1.4g

two 3rd Guineas leaving 4.0g

 

I could do with the true thickness of the above coins and i may help pin it down further

 

 

please discuss my mathematics as it is not my strongest subject

 

[the_Thing ®]

I say crack the sucker open!

[nunfa0]

See if you can move the center.

[Bugmann1974]

Would there be a good reasoon to hide a gold coin in between two coppers? Was this something known to be done in that period?

[CyberspaceVoid]

Dooly, You have such interesting problems

 

May I suggest, if you have a friend in the medical profession, you have either an x-ray or other non damaging scan done on it (gratis, of course). I personally think the unknown nature of the interior is the most valuable part of this "coin"

 

(an afterthought ... someone could have just made the thing as a small and unique paperweight)

[the_Thing ®]

Your retirement could be waiting for you in there!

[J.A. Collection]

It almost looks like it could be a man's wedding band with two coins attached. Sounds like an x-ray would be the best option.

[thirdgreenham]

Interesting dilemma. There's definitely something in there. What to do, what to do?

[dooly]

 

hahah! i think i will send it to NGC and ask for Verity +

[HiHoAudio]

It almost looks like it could be a man's wedding band with two coins attached. Sounds like an x-ray would be the best option.

 

I was thinking the same exact thing.

 

Either:

 

1) Take it to your dentist for an X-Ray (nitrous oxide optional) or

 

2) Take it to a good jeweler to be split in half like a clam.

 

Me, I would do #1 then #2. But I'm quite predictable.

[mkman123]

Really neat, i like it

[grip]

I couldn't stand the suspense..go for it

[dooly]

still sitting on my computer table stairing at me

[Chris W-migration]

Interesting coin. If you just take the basic dimensions you mentioned, 25 mm diameter X 6 mm thk and a weight of 21 gm, the density calculates out to 7.1 gm/cc which indicates it is probably copper alloy. Of course this depends on the amount of relief on the faces and edges, but a gold coin of similar size would weigh about 57 gm. You can determine the density yourself with a simple experiment and that will point you in the right direction as far as material goes, but I do not think there is a lick of gold in your coin, sorry, it is just too light for its size.