Today I picked up a S&W Model 28-2. The thing is beautiful and I'd say excellent+ condition, it may be unfired. It has the 6" barrel, Magna stocks, and came with the original box, paperwork, and cleaning tools. I was hoping someone could help me out with the DOB/shipping date. Serial number is N5140XX. I'm thinking late 70's, maybe 79-80. Also, what is the deal with the "X" looking character on the right side of the barrel between ".357 CTG." and "Highway Patrolman"? Thanks in advance.