I have the opportunity to buy a S&W .38 Special and would like some more info about it. I don't have enough info for good ID, but it has one feature I've never seen. It has a barrel that is flat on the sides and round top and bottom. Like what Browning calls "slab side" on some of their pistols. The note I have says it is a Model 14 and the serial starts with K. What can you tell me about it from this limited description? And a thought about value would be helpful too. Thanks for your help.