What do you mean by "acceptable?" Are you approaching it from the perspective of perceived quality of execution, i.e. a professionally trained carver vs. some kid with a hammer and a nail, or the perspective of design and/or subject?
Or both?
Let me just say, I find pretty much any antique acceptable, regardless of either criteria!
I do not use the term "crude" in this thread as a derogatory term, at least not to my mind. Perhaps I should say "less professional?"