I'm coming up with a wrought-metal company ::: But interestingly there is a "Casa Tucan" hotel in Mexico as well as Costa Rica. :::
::: I wonder if this is hotel-related in some way, like something a hotel would provide for its most distinguished guests? ::::
They're Brazilian ice cream/dessert cups, usually sold with matching spoons - not familiar with this company, but similar sets were made by various manufacturers (Plata Tucan = Toucan Plate).