I don't think you got a bad buy, it all depends what you are planning to do with them. If you are planning to convert these cues, some of them should work very well, from the weight stamp on the forearm, I can tell you that the cues were made after the Mid to late 30's. I suspect from other older cues I have seen that they were made between the above time and the Mid 40's.
Like I said above they would make good conversion cues and because of the age of the wood that is what I would do with them.