Poland, 3D Lighthouse.

What a coincidence! I got another 3D postcard at the same time I got one from Mateusz. They both are Polish and both of them sent me "Pozdrowienia Znad Morza" 3D series :D Nice! This one with lighthouse was sent by Kasia. She wrote the messages in Polish language and the only thing I remarkably noticed was "gofry i lody" (= waffle and ice cream) :P

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Poland, 3D Dolphins.

Another postcard from Mateusz, and this time it is a 3D one! :D I only showed half backside of the postcard (with address and stamp) because I don't want people to read the private messages he wrote to me. I usually don't mind showing the messages people wrote on the postcards, but I don't want to share something private and with the inside jokes xD Haha.

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Netherlands, 3D Holland.

 The card needs to be squeezed so you'll be able to see the 3D picture through the 2 glasses behind the card. Such an unusual one ^^ Got it from Karin and was sent in an envelope.

Stamps.