ive researched (without posting a what is best 1911 thread!) and settled on a colt gold cup. everything i read indicates that the current production is really good... my question is i know some shops/distrubutors will have guns in the line for years, how can i tell that the pistol im looking at is recent manufacture? is there a serial # cutoff i can look for or anything else that will let me know it was made within the last year?