About half of the pack are scenes from the episodes of series 5 and 6. Some of them are nice, some are okay - you wouldn't hold your breath looking at the room from Day of the Moon or Pond's home at Leadworth. There are about 3-4 postcards for Gaiman's, pirates and flesh episodes and about two times more for the opening two-parter.
Another good slice of the pack are promo-pictures from series 5 and 6 (Doctor, Amy, Doctor&Amy, Doctor&Amy&some villains - you'll recognise these pictures if you were following the series close enough) plus DW logos and TARDISes. You can also find a postcard for some of the well-known and obscure monsters, like Sontarans, Cybermen, Slitheen, Judoons, a decent amount of Daleks cards and, surprisingly, Silents (why not cybermen?). There is one picture for Davros and one for Mr. Saxon (a really striking one), two for the Weeping Angels (series 3 and series 5 versions)
There are also a few funny designers cards and five or six locations like Platform One, New-New-...-New York and Gallifrey.
All cards are standard size (10x15), printed on a cardboard, with the postal backside.