They do have value above face but as was said in a different post there just doesn't seem to be that great a value.
As for the coins I have, so far I have given one away to a guy at work who dabbles on the outskirts of collecting. He in turn gave me a 1876 German Pfennig, but even more importantly he is asking more questions and is starting to do some searching. The other 4 are put back, 1 or 2 to be kept by me and the other 2 for either future use as trades or some other fun venture...who knows, I might give one away at some future time as a prize or as a bonus with an auction