CSD13383F4: Can someone tell me what the letters/numbers printed on the part represent?

Neal,

Thanks for posting, the part marking on this CSD13383F4 is YGC, where Y is the year and GC stands for CSD13383F4 part number. So in this case the device is from 2017 and GC says it is the CSD13383F4.
The round dot is the Pin 1 indicator

Thanks Chris. That answered my question.