Water pump date code

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ill get some pics. want to know if its original to car.
 
Number inside the clock looks like 73 guess not original lol
 
is that the way to read it? what do the numbers below part number mean? I believe they are 09104
 
The 'star wheel' has the last two digits of the calendar year in it, in this case 73 for 1973.

Inside any ray is one to four dots. Each dot is a week. A part cast the first week of 1973 will have one dot in the first the first ray. 3 for 3rd week, etc. As each week passed, another dot. Each open ray space is a month.

The 09104 is the vendor number for the supplier that made the part for Chrysler - whoever that was.

Examples of several different date code types at The 1970 Hamtramck Registry "Date Codes 101" (Page 1)
 
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