I am always learning. I wondered if there was a way to tell floor sweepers from cancellations from errors/mistakes. I guess I also made a mistake in reading mistake as error.

In any case, I agree it's still cool and collectible. I have one in my collection.

Whatever it is, I still love it and want it in my collection. I imagine an older chip from the Golden Gate would still be in demand even if a floor sweeper/cancellation/mistake/whatever.

Michael Siskin