They first appeared in the mainstream around the 80s, but the exact origin is unknown. What we do know is that these magic mushrooms are popular among mushroom enthusiasts.
We also know they're cultivars, not natural strains. Some believe a company in Amsterdam cultivated them for the first time, but this has not been confirmed.
Golden Teachers have bigger than average caps with yellow patterns and golden stems. Yet people often confuse them with other strains from the Cubensis species.
It doesn't help that many people use the name Golden teacher when referring to other Cubensis. Probably because of how similar they are; this is especially true for Golden Teacher and B+ strains.
When in doubt, buy from a trusted source. They will know. This advice applies whether you are buying spores or whole shrooms.