My Valentine Babies dropped a Sweetheart Throne and a Sweetheart's Bench during a collection yesterday and as luck would have it, I already had my Shack out and running. (I'm trying to get over 100 of each deco on offer - excluding the walls/paths/etc - via the trades as a personal goal) So when I collected my Shack Trades, I got a Sweetheart Fountain and another Bench which gave me the prize.[/QUOTE]

Lol, that explains it why some people have the seal already. Most probably a dev is now banging his hand to his desk. Looks like an event design flaw to me. They might chance it, so use it while you can :-)