Primary or Secondary Sources?

Postal Objects

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"Latest News!" coffee mug made by Western Stoneware in the United States.
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Man in the moon fancy cancel handstamp
 
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Lever pouch padlock
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Validator for money orders
 

This is a collection of four different objects. Do you know which ones are primary sources and which ones are secondary sources for the 1800s? Remember as a historian, you need to look for all of the clues (dates, materials used, type of object, etc.) provided to come up with an answer.