1961 saw the release of the first tank kits - the Panther, Sherman and Churchill. The Panther has the dubious distinction of being one of the kits I have never built, as my first Panther was the far superior Matchbox kit. I have, however, rebuilt several - see the relevant post at http://megablitzandmore.blogspot.com/2010/09/panthers.html
These kits were originally on sale in bags with the folded instructions making the header card.
Here is a bog-standard Churchill built straight from the box. Or bag.
Next time - 1962 and another 3 realeases.