Got it on Amazon (see link). At the time I was not aware of all the other resources out there, just got excited about retro bananas.
Based on your credentials I'm assuming you're quite the banana expert. Does the source look legit? My plant seems very similar in leaf shape and color to sproino's but I also noticed sputinc7's comment claiming that it is not a GM.
https://www.amazon.com/Gros-Michel-B...+michel+banana