Port auction: no bottles right? (7)
I believe the answer is:
salerno
'port' is the definition.
(I've seen this before)
'auction no bottles right?' is the wordplay.
'auction' becomes 'sale' (I've seen this before).
'bottles' is an insertion indicator (bottle can mean to contain).
'right?' becomes 'R' (common abbreviation).
'sale'+'no'='saleno'
'saleno' going around 'r' is 'SALERNO'.
(Other definitions for salerno that I've seen before include "South Italian port" , "Battle" , "European city!" , "Learn so as to go out to the Italian port city" , "in Italy!" .)