It was in a limited run by Davidson's of around 2500 units that also included the 44 magnum chambering, The 45 Colt has the ballard rifling. This was produced first and afterwards, Marlin came out with the 1894P
44mag ported model and the 1894CP .357 ported model, all with 16" barrels. If it is in great shape, it should be worth somewhere between
$3-500, depending on how bad you want it. I have an 1894CP and I love it and my buddy has the 1895P model.