These jerseys would be great to wear to games, especially since each of these teams has a MLS or modern NASL counterpart. Personally, I’m a Galaxy fan so I gravitate to the Aztecs, but living in Minnesota I’m also a sucker for Kicks gear.
I found the following jerseys at Soccer.com. You can click-through on the jerseys to see the details. Most of the m are about $60 each..
The following are from Amazon.com for about $60 each. Limited Sizes:
It looks like there’s some Copa Football Classic Jerseys over at the Onion Bag too, but they’re sold out of a lot of options. Still, they’ve got a few more foreign clubs to choose from.
Of course Toffs in the UK has some NASL jerseys but I have not used them since I’m in the USA. They have some interesting shirts to choose from, starting at around $50 plus shipping.