The one who guesses
1. brands (there are three)
2. scale ...
...gets one PAINTED for free!!!
If you look closely there are some hints to help you...
And here they are at the Buçaco Museum itself. From this perspective you have more hints to help you find the solutions.
And you better rush as the miniatures to offer are only a few hundred. Now to the many who asked (as you can see in Comments): someone who answers correctly will have to come here at this basement to collect his miniature.