ID for coin Spain KM821 - 1 Peseta - Juan Carlos I

Hello everyone, a friend could send me a file or an enlarged photo of the coin Spain KM821 - 1 Peseta - Juan Carlos I - 1987 - E-87? Where is the difference of the other coin?
Thank you to everyone who can help!
Olivetti

Bonjour à tous, un ami pourrait me faire parvenir un fichier ou une photo agrandie de l'Espagne, pièce KM821 - 1 peseta - Juan Carlos Ier - 1987 - E-87? Où est la différence de la médaille d'autres?
Merci à tous ceux qui peuvent vous aider!
Olivetti

At first I though it would be on a small star like mintages a few years earlier. Now I have seen the picture below it is un-missable; it is printed in large characters at the top of the reverse! On Numista it says E-87 (standing for an Exposition in the country in 1987) is also on the 200 Pesetas, so I show that as well.

                            

  I have seen that E-87 was brought about for showcasing coins. It was the 3rd National Numismatic Exposition in Madrid in 1987. Mintage for both coins was 60,000 each.
  For the 200 Pesetas the number is KM# 829 from 1986-1988 and the special E-87 version is separate - even though the basic design is the same - and is KM# 830 it seems. Similarly, the 1 Peseta E-87 is KM# 828, so should not be listed among the 1982-1989 coins as KM# 821 I think.
 

Ok. Now I'm wondering.... The older coins with the stars have similar numbers. Are they mintage years or something eles?

They are mintage years, on the little star. The main date on the front is a design year.

There was something similar to all the above for the Barcelona Exposition in 1958 where the 58 in the star was replaced with BA instead. Such as is written in the link below for the 50 Pesetas. Other coins also.

https://en.numista.com/catalogue/pieces1884.html

Ok. Thank you. I thought that was the case, but this topic made me wonder.

Verweis : ZacUKThey are mintage years, on the little star. The main date on the front is a design year.

There was something similar to all the above for the Barcelona Exposition in 1958 where the 58 in the star was replaced with BA instead. Such as is written in the link below for the 50 Pesetas. Other coins also.

https://en.numista.com/catalogue/pieces1884.html

  I appreciate the help of friend, as always very informative and easy to understand, does not have the slightest doubt in the answer, thank you so much!
Greetings from Brazil
M. Olivetti