An update to this thread with my latest find. Found this mint condition Surrey set at a flea market yesterday for the princely sum of $5. I know these sets aren't considered very glamorous but the soap is outstanding so that alone made it worthwhile. And this puck is the older style like michiganlover and Saltchuck have.
The similar blue Surrey brush seen in the above picture is actually pretty good, much better than the VDH that replaced these so I'm hoping this one is just as good.
For now this puck will go into storage until I use up the first one. If you ever run across this soap I can highly recomend picking it up if the price is anywhere near reasonable.