I purchased Provider OG bean seeds this year, and noticed they also sell Provider Conv seeds. Description appears the same other than the OG. What's the difference? This is what I have: http://www.seedsavers.org/onlinestore/bean/Bean-Provider-OG.html
OG is a designation for seeds from a certified organic provider. OP, as you probably know, means that the variety is open-pollinated and you can save seed for next season. The OG vs. the Conventional means you pay more for organic, but the result will be the same bean, same taste, just your preference as to certified organic or not.