The Gold Cup Trophy is a Gold Cup top end on a Government model frame.
The Stainless version came with Bomar type rear sights.
The Blued version came with Ellison style rear sights.
Series 80 MK IV Gold Cup National Match for comparison
The Colt National Match and Gold Cup 1911s have light weight slides and reduced power springs as they were meant to shoot bullseye with reduced power loads. A steady diet of full power Ball ammo without modifications will beat one to death.
I'm not sure if the Gold Cup Trophy utilizes a standard or lightened slide, however I believe it utilizes Government Model springs and is suited for use of Ball ammo.