score:1
No, there was no way to tell.
If a confrontation occurred, there were laws that dictated how the parties involved were supposed to announce themselves to each other.
Note that in the period in question the old samurai system was starting to break down.
Upvote:1
Also, there were family crests worn on kimono so clan/family/domain affiliation could be discerned but not everyone had a crest. The crest, called a 'mon' was often round and had stylized elements in it. Mitsubishi's trademark comes from the crest of the family that founded the company.