Spain 1871 5 Pesetas
KM #666 .900 silver
Madrid (six-pointed star)
If you are familiar with the Spanish coins of this era, you know that the date on some coins is nominal and the actual date is in the stars. That is, these 5 pesetas can be 1871 / 73/74/75. The second digit on the second star on this one, however, defies identification.
I have looked at this with a glass at every angle and I cannot make out a second digit - it's like it was never there! This is surprising as they are incuse and there is not that much wear on the coin such that it would be completely obscured.
Luckily, Krause lists only a single SD-M (which is what this one is) and that is for 1871 - so this is, in fact, an 1871.