*I could not find where to put this info in the Q&A, so I apologize if this is not appropriate.

The digits in the part number represent:
>K16: year 2016
>Next 2 digits: the major components of the course, example- 10 large field, 11 field board, 12 corn plot, 13 hydroponics etc.
> Next 2 fields are sub parts of major components

the hyphenated number following the 7 digit number is the specific version, for example left/right of the subpart ex. K16500-1 
Thank you

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