Its not a breeder or seedbank, clone only strains are only available as clones. Mostly they are special selected phenotypes of a commercial strain, or old classics who was keeped by someone somewhere...

Crown OG is an indica strain that stays true to its OG roots with a sweet pine aroma and potent euphoric effects. While Crown OG may take a toll on your memory and cognitive sharpness, its crushing THC content is perfect for patients suffering severe pain or insomnia. This strain took 1st place in the 2015 High Times Denver Cannabis Cup as “Best Indica Concentrate,” earning the victorious stripes its name sets forth.