Select identical?

Is there any easy way to select all other objects that are the same as the currently selected? (Like, say I have a piu ff dynamic, select all ofther piu ff, but not plain ff or piu f).

Differing properties would not make the objects different (yes, I know, that’s where this gets hazy), as indeed the workflow I’m thinking of is to mass-set properties.

No, there’s no way to be that specific about the selection, I’m afraid.