Argentina and Hearts. Dunno why, but my mum got me and my brother the Argentinians from the London Road Co-op, and some Scottish friends of the family got us Hearts. We also had Celtic (who also doubled up as Shamrock Rovers) and Aston Villa (who were also Burnley and West Ham)
Well, having decided to take a walk down memory lane, I've built up quite a collection, mostly of late-70's heavyweight teams;
Brighton
Man Utd
Hearts
England - the C500 on in the coloured box, I have the rare long box
Newcastle
QPR
Leeds x2
Liverpool x3
Rangers
Holland / Blackpool
Peru
Uruguay
Brazil x2
Aston Villa / West Ham x2
Tottenham
Then some lightweight teams;
Southampton
Brighton
Crystal Palace
Aston Villa / West Ham
Argentina
I'm sure I've got a couple more, but I'm starting to realise I may be coming across as a bit tragic.