Possible Clues:

• Punctuation mark
• Mark indicates some of the letters are missing
• Bloomingdale's gets one out to a shopper
• Sign for a missing letter
• Sign of possession
• Mark raised concerns finally in biblical text, a preacher almost bottling it?
• It indicates I will be missing from 'Who's Who'
• Punctuation mark perhaps too freely used
• Perhaps too haphazardly, it may be misplaced by shopkeeper?
• One's got this, being perhaps too shaky