Table 24: 
Lock Quality
Quality
  | Modification
  | 
Wretched
  | +30%
  | 
Poor
  | +15%
  | 
Good
  |     0%
  | 
Excellent
  |  -20%
  | 
Superior
  |  -40%
  | 
Masterful
  |  -60%
  | 
 The quality of a lock cannot be discerned just by looking at it. Indeed, one
of the tricks of the master craftsman is to disguise the difficulty of the lock
by housing it in a cheap-looking case. A thief can learn the quality of a lock
by attempting to pick it. This attempt need not be successful ("Gee, this lock
must be a really superior job. It's a lot harder than it looks.")
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