Undistinguished collection of salesmen (8)
I believe the answer is:
nameless
'undistinguished' is the definition.
(thesaurus)
'of salesmen' is the wordplay.
'of' is an anagram indicator (the answer comes from or 'of' the letters).
'salesmen' anagrammed gives 'NAMELESS'.
'collection' acts as a link.
This may not be right. It may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for nameless that I've seen before include "Untitled" , "like the guy in the spaghetti movies?" , "Too unpleasant" , "This undistinguished" , "Unidentified" .)