Inyeresting how one thing leads to another.......First, I saw the post about the Large Crown "21 Club" chip...............Then I recalled mine, scanned it and added it to the thread...........Then I felt bad about how dirty it looked...........So, I cleaned it up, re-scanned it and put it on eBay:
http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=155473260

The cleaned-up chip is also seen below.

I cleaned it a very simple way. First, I have a pared down tooth brush (I save my old tooth brushes and cut down the bristles with a sharp pair of scissors). The I clean the chip under hot water with the brush after rubbing it on regular Dove hand soap. I brush hard on the rim area, more gently over the hot-stamp imprint......Then I rinse, dry, apply some common household machine oil, wipe with paper. And that is it. Compare this picture with the dirty, grimy one (same chips) in the above post (8/30/99 2:43 PM).