postcard.co.uk

I've started sorting a large collection of postcards and have found some odd cards. Could someone tell me what they're called? They're the size of postcards and from similar stock but the side opposite the photo is blank. They're mostly risqué photos of women in bikinis. Would these be 'arcade cards' or are they still considered postcards?

These might be referred to as 'Postcard-sized photos' as opposed to Postcards...