Absolutely no affiliation. Please do your own research. I don't know how those prices compare to the market but I suspect these are uncommon items. The Vintage Knob has pages on each.
http://phoenix.craigslist.org/nph/ele/5054011677.html
http://phoenix.craigslist.org/nph/ele/5054016282.html
http://phoenix.craigslist.org/nph/ele/5054011677.html
http://phoenix.craigslist.org/nph/ele/5054016282.html