MAGENTA 8c on 2-4/8c ULTRAMARINE
1882 KING ALFONSO XII POSTAGE FIRST ISSUE

Issued on December, 1887
Scott #105 __
Surcharge on Scott #78
It is generally believed this surcharge was applied only to the 1st and 2nd retouch. As the different issues are almost indistinguishable to the casual observer, it is likely this stamp was surcharged inadvertently. 

VERY FEW KNOWN