I picked this up at my LCS today. First thing I noticed was that the UK version is much bigger. It's HUGE! Second, it's labeled "One Pound" which is weird because I didn't know they made Morgans in the UK? It actually weighs a pound! It's an awesome strike - DMPL! Mirrors for days and a frosty cameo!
Interesting find. Isn't it more likely the "one pound" refers to its weight as opposed to the British monetary system?
It's a fantasy piece. Typically a paperweight. If it's silver (unlikely as I don't see the typical markings) it would be worth a nice bit (1# = 453 grams at 31.1 grams per troy ounce is just over 14.5 ounces of silver). It's probably silver plated steel.
Any writing on the edge? Why do you say it was make in the UK ? Could it be one pound of copper that is silver plated ?
Found this, it may be of interest. Link included. "If you see a coin for sale and the adv., says ONE POUND SILVER COIN and shows a picture of the front and none of the back and the date on the coin is 1878 with a Morgan Head you can just about be certain it is a fake. Clad silver usually over copper. Not worth the cost of the mailing. If you note carefully most sellers of this coin will not refer to it as PURE SILVER or .999% pure silver, etc. Instead they says things like One Pound Silver Coin, or Silver Coin. If a picture is shown of the back and all you see is ONE POUND or ONE POUND TROY or ONE TROY POUND but no where on the coin does it says FINE SILVER or .999% PURE SILVER. Run don't walk to the nearest exit." http://www.ebay.com/gds/Silver-One-Pound-1878-Morgan-/10000000003444080/g.html
So according to my LCS, it was tested with an XRF system and it is a solid silver piece. It is actually 1 pound - 16.17 ounces (14.73 OZT). It's about 3.5 inches in diameter. I bought it merely as a silver paperweight. But after reading that Ebay warning post - I question just how well they tested the ingot. It may go back. Even a trusted LCS is bound to make a mistake now and then. Cointalk definitely showing it's value for me today!!!
I'm not sure of the exact depth of penetration but It would have to be very thick plating to fool an XRF
It is, to simplify, dependent upon both the operating voltage of the tester and the composition of the metal being tested, and a small handheld could possibly be defeated by plating not unrealistically thick.