I need your help. I recently purchased my first, But not my last, Detonics CombatMaster Mark I (blued). From what I understand it is a earlier version. The serial number is 4539. It is in 90% condition. I believe the barrel is a cutdown colt barrel as on the top of the barrel it is marked "Colt .45 Auto". Are the earlier detonics of greater value then the later ones?

thanks in advance for the Info
Kendall
Wkdk2@adelphia.net