Osco Drug and Changeable Robots in 1985
December 19, 1985. I cannot be 100% certain, but it looks to me as if this Osco Drug advertisement from the Great Falls, Montana, Great Falls Tribune newspaper may be promoting the Select Convertors toys. The ad doesn’t call out the line by name, but the illustration looks to me to be Vette, one of the Convertors Mini Bots cheap transforming robot toys that you can see at toyarchive.com.
I don’t own Vette, but I do have some of the Convertors toys and have even posted reviews over the last decade: