The value of pipe #575 is 33 points.
Joe Fendrick (seahawknut8tc4) held an auction on eBay for several pipes, this one among them. I took a chance - there was no way to ask Joe which grey this was. I was delighted to find I lucked out and it was the grey I didn't have in the Pot shape. The other pipes, of course, will find their way back to eBay but this one takes its place in the Table of Colors and Shapes of the pipe.