I’ve not heard of any secretarials either- and the best wishes ones I’ve seen have looked fine to me. From my research a bunch of different booklplates were shipped to Connery in the Bahamas and he signed them all there In various batches.
As far as I know Connery never had issues signing... as long as he didn’t feel he was being taken advantage of. He certainly used secretarials through the mail for a time but they were fairly obvious and identifiable.