Here's a link from a 2012 Analog Planet posting where Michael Fremer discusses the various labels and what he could glean from them.
http://www.analogplanet.com/content/reissue-labels-avoid-and-some-best-proceed-caution#lChAouWFUdChT...
http://www.analogplanet.com/content/reissue-labels-avoid-and-some-best-proceed-caution#lChAouWFUdChT...