Identical Part Number for different parts

Manufacturer’s Part Number: MAX11607EWC+T
Digikey Part Number:
2156-MAX11607EWC+T-ND, $1.02
but also
Digikey Part Numbers:
MAX11607EWC+TTR-ND - Tape & Reel (TR)
MAX11607EWC+TCT-ND - Cut Tape (CT)
How is it possible the same part to have two different listings?
This item is a marketplace product from Rochester Electronics and appears, based on the old data sheet, to be new old stock. The parts may even be 10 years old.
This is sold buy Digi-Key and appears to new stock.

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