My perspective is that silversmiths are better graded as being mediocre, reasonable, good or refined, than rather being dedicated to this or that kind of work, or speciality.
When they are good, they may spend their time making flowers and chalices but, you give them a commission for something completely different and, if they are good, work appears in his excelency.
The other day i wanted to offer a sword miniature to a person whom i owed some courtesy and asked my jewelry shop owner friend to commission the job to his current silversmith.
I have shown the guy a catalogue with the sword example and the job was so perfect and faithful that it looked like he spent all his professional life making sword miniatures.
I am talking about Portuguese artisans, surely familiar to Spanish ones. Their skill grade must reach the same level.
I don't know if i am sticking to the topic ... or not