QuoteThe coupler that comes with it is unique.That would be surprising, and hasn't been mentioned in the reviews.
Bachmann started a process of offering high and low couplers with the 1:20.3 Spectrum rolling stock. They put a 'standard' box on the frame and supplied two shanks - one straight so the coupler was high, essentially at the Kadee coupler height gauge, and one with a zigzag so the coupler came out low at the same height as the older couplers mounted on the trucks (and tenders of 4-6-0s before this rework.)
Take a look at this photo of the shanks:
https://i.ebayimg.com/images/g/LXwAAOSwQFdjKK0-/s-l1600.jpg