I have a bit of a dilema. I'm looking to buy a Colt revolver from a friend. But there seems to be a little confusion as to exactly what it is and when it was manufactured. According to the Colt serial number database, (serial number F15098) it is a Police Positive Special & Detective Special made in 1974. In researching this model, it apparently was manufactured from 1908 to 1995, in calibers 32 Colt, 38 Colt New Police, 32-20 and 38 Special. Here is the problem. On the barrel is "Colt DA 45" which indicates it is a Double Action 45 (according to Wikipedia). I haven't actually seen it first hand, so I can't really say what caliber it is. My friend did send me a couple photos.Could the Colt database be wrong?