This .45 Colt Blackhawk, or Super Blackhawk if you will, was originally a Bisley:
And this Bisley started ut life as a .45 Blackhawk. (Its now a Blackhawk again)
Most parts completely interchange pretty easily, especially hammers and grip frames. The Bisley hammer can be put on a Blackhawk, though some opening up of the hammer slot is required on the grip frame.