I have sold these for the past 17 or so years, & have had VERY few of them too. Can't get any more of them. Some of these came in 14x6" as well - REALLY rare! Notice the small keyway in one of the small holes - most of them had this, but not all. The 15" ones are barely available.

14x6": http://www.classicchambered.com/rims/14-6pre.jpg
14.5.5": http://www.classicchambered.com/rims/1455.jpg
Even some 15": http://www.classicchambered.com/rims/a15.jpg

No Man With A Good Car Needs To Be Justified