Strange brass banknote, someone can help me to identification? [resuelto]

Hi everyone
my friend has a strange banknote, as rolled brass. I think it's reproduction of a Spanish banknote.
I know..we treat only coins.. but if ..there's someone can help me to identify this strange banknote?

Thanks so much in advance.

It isn't a banknote plate is it?

I think it is about the thickness 2/3millimetri, I think it is not a true banknote, but a simple reproduction of an existing one, probably a toy or a fake. I think it's simple brass or metal alloy. I do not know more, I deduced all from pictures I received.

  It is a normal pre-Euro banknote underneath, which has been plated (I think), like these ...
https://www.google.co.uk/search?q=plated+banknote&safe=off&source=lnms&tbm=isch&sa=X&ei=ITphU9uKIsHwPMX5gZAE&ved=0CAYQ_AUoAQ&biw=1024&bih=630


 That is the original note, and someone has created 1H01234567 serial number for the plated version. I am guessing - though maybe could be made specially just from metal, with no paper note underneath.
 Also - it cannot be a banknote plate as all the letters and numbers are the correct way round; they would need to be backwards to be a printing plate.   

Couldn't discern the thickness!

I will ask my friend more details about this plaque, for the moment thanks everyone for the help
 

Dear all, I am the owner of this strange (for me) item. I can add that the length is about 8 cm and the thickness 2-3 mm. So it is smaller than the original banknote (like 1:2 ratio or more). I think it is made of brass. I can not weight it or measure the density now but I will. Thanks for the help !

Ciao!

Esistoni biglietti fatti di un foglio d'oro, ma il tuo non sembra essere questo

http://www.tresordupatrimoine.fr/1640069-billet-500-euros-or.html

Ciao Monèphil  

Si ho visto anche io che esistono dei biglietti fatti di lamina d'oro, ma penso anch'io che non è il mio caso.
Presumo sia una riproduzione fatta di ottone o qualche lega metallica, appena il mio amico riesce a calcolare il peso specifico, probabilmente riusciremo a saperne di più su quest'oggetto misterioso.

grazie, ancora una volta, per il tuo interesse e l'aiuto  

Prego