Here is mine
4 Likes
PL-527690
76 
1 Like
My most popular has 42 likes, and is a free/ad card, which of course you can’t tell from the gallery.
5 Likes
My most popular cards are between the Iniuyama Gotochi card and the illustration Nagoya card:
4 Likes
Here is mine :
Me too. 
7 Likes
My most popular card was liked 10 times and is an illustration of cats
Mine is this little hedgehog
6 Likes
My most popular sent cards are these:
(10 likes, but if I add the likes on all cards with this motiv it has 23 likes. Unfortunately this card cannot be sent any more, even though it was first approved by ana and paulo. But the rules changed and that’s okay.)
A similar one has 29 likes (adding all of those on first pages, mostliked one has 7 likes).
The other two cards with 10 likes are these:
Interesting - naked women and alcohol are popular 
4 Likes
My most popular card is a Scottish lighthouse 
4 Likes
Mine is an image of the castle located in my city. It was favourited 52 times
https://www.postcrossing.com/postcards/FR-184691
2 Likes
This is my most popular sent postcard.
Followed by this one. Which I personally also like a lot.
3 Likes
This postcard about Harry Potter in different languages, seven likes:
4 Likes
Mine is this Moomin card:
19 likes
5 Likes
This one, with 8 likes, 9 including the other copy I sent. It’s one of my personal favorites, too.
3 Likes
I’m glad that Postcrossing is leading the way in this groundbreaking research! 
My most popular sent postcard is this couple:
… almost matched in popularity by this couple:
5 Likes
Well - on your popular one they still wear a little bit of garment, though 
4 Likes
This is mine. I sent it some years ago when I still lived in Aachen
2 Likes
This ist mine - Empress Elisabeth of Austria (“Sissi”)
3 Likes
mine is this one with nordic animals, it has 51 likes 
11 Likes