02-23-2016, 12:41 PM
Example(2) is neither formal nor polite. IMHO, it has just more information than (1) implying "I can not find it".
In the polite form, it would be "それはどちらにございますか".
"どちら" shall be translated as "which" in normal form. But in this polite case, it shall be translated as "where" because of very old wording.
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