In the 2-1/2 years I've been a member of the forum I think I've won at least three giveaways and reciprocation is appropriate. There will be other material latter in the year when winter weather has me indoors working on the collection more.
Cows are a philatelic topic of mine and this set is among my favorite but I discover I have three sets of these (the peril of one's collection being largely boxed up for a while because of space and time but I sill went to stamp shows and peaked in on eBay
Cuba Scott 1804-1810 MNH. Just for reference Scott 2015 catalog values for unused are $0.25 for 1804-1808, $1.60 for 1809, $3.25 for 1810, and $6.10 for the complete set. They were issued on June 28, 1973.
To enter please reply to this topic and be able to receive a notice if you win (at least 50 posts and e-mail turned on). I'll select a winner at random next Sunday April 18.