Thanks for the quick reply and also the "heads up" on forum etiquette. I'll be more careful in the future. From your description on your old post I could have sworn this was your gun. Anyway, it appears to me that this gun is #1278 of the 10,000 Colts made in Hartford and sent to Argentina in 1927/28. The number 1278 is on the top of the slide, the barrel is new. Won't know for sure if frame matches the slide as the frame serial number is under the main spring housing. However the frame has all the characteristics of a 1927 model. Here is a photo. Sorry about the small size, I took it off of the seller's website.