This was sold to me as a Musa Tropicana by Palm Farm a few years ago.
What's unusual is that if it is a tropicana it has survived outside for the last 2 years. Psudeostem died off last winter, but it re sprouted in mid summer, this time as 4 plants. It is in a very good microclimate. Sunniest part of the garden with good drainage and a pebble mulch to keep the roots relatively warm in the winter.
I have actually fleeced / wrapped it this winter (until I just uncovered) and the psuedostems are still intact.