Rob,
Great Giants pin collection, and I know that you are just showing the tip of the iceberg here.
BTW, I collect pinbacks of guys that pitched no-hitters. I suspect that currently I have between 50-60 different ones. One pinback that I'm looking for is of Gaylord Perry in a SF Giants uniform. Do you have any duplicates or know someone that might?
Here is a small sampling of pinbacks from my own collection.