Not sure how good it is, but on www.cunninghamexonumia.com you can get large lots of transit tokens for very reasonable amounts. I don't collect these but I'm an exonumia guy...I do have one... Cunningham number AK430, Atwood 300E (?), nickel, 16mm, likely minted 1951 - 1954. I think this thread should have been in Coin Chat though.
T token for the mbta in Boston...they stopped producing them about 10 yrs ago and stopped accepting them about 5 yrs ago, I've had this one for awhile as a memento, but I just found another in a bank coin machine reject tray earlier this week...
Damn Charlie cards, first time I ever got one I put 20 in the machine and it spit out a card and like 15 sacagaweas, the MBTA actually sells MS T tokens on there website now, anything to make a buck