Spain - 5 Pesetas 1871 - Silver coin, References: KM# 666, Cal# 5. [opgelost]

I have inherited this coin many years ago - in the 1980's.

Spain - 5 Pesetas 1871 - Silver coin, References: KM# 666, Cal# 5.

Various text / inscriptions:

AMADEO I REY DE ESPANA 1871

L * M *

40 PIEZAS EN KILOG *M* 5 PESETAS D*E* LEY 900 MILLESIMAS

Edge:
I LIBERTAD * I * JUSTICIA * I * Y *

PLUS ULTRA


Diameter approx. 37.5 mm.
Thickness approx. 3.7 mm.

However, how can I determine if this coin is not the original?
I have no reason to doubt that it is not a fake, but how can I tell?

Thanks
Johnny Fribert
PS: I have inherited som more coins - I will open separate forum entries for each of them (other 5 pesetas from the 1800 century)
..

start with a good gram scale. you need to know the weight. it should weigh 25 grams.
if the weight is correct that is a good sign it is real.
if it is underweight by more than 2 grams it is probably a copper/nickel copy.
also learn about silver tests
http://www.silvercoins.com/fake-silver-coins-14-ways-to-spot-counterfeits/

Thank you very much.
Good Link.

It must be fake then - weight 21.5 gram and it is a little magnetic - I did not have to use
a neodymium magnet - one of my kitchen magnets did the trick :-)

Note though, that the coin passes the Ice-Cube test! The ice started to melt immediately after
being put on the coin, so I guess it is coated with real silver.

Thanks
Johnny Fribert

indeed very common replica/fake

Citeer: "PetrusAscanus"​indeed very common replica/fake

​Yes,

I also have the very very rare 5 pesetas from 1869 (KM# 655)! They only minted 100!.
It also fails the tests, except the ice-cube test.

This really makes me wonder - if you want to fake an expensive coin, why did they not go all the way
and make sure it has the amount of silver defined (.900) and the 25 gram weight and the other
measurements... That would not have cost a lot, compared to its value. Go Figure...

;-)
Johnny Fribert

if it melts ice well, it is probably pure copper under the silver plate. copper has about 85% thermal conductivity of silver.

but yes, if you wanted to counterfeit a very valuable silver coin, why not make it out of silver?