winchester1886:
You have a .38 Military & Police Postwar manufactured between 1948 & 1951, serial range was C1 to C223998. The Model 10 designation was introduced in 1957.
Deaf Smith:
S&W had some weird serial number ranges with the J frames. If a pinned barrel then Your Model 38 Bodyguard Airweight dates to 1971-72. If the barrel isn't pinned then 1983.
The Model 642 .38 Centennial Airweight Stainless (no dash) was produced betweeen 1990 & 1993. Yours probably dates to 1991, as serial numbers in the BKNxxxx range shipped in August of that year.
Your Model 64 .38 Military & Police Stainless was manufactured in 1973 or 1974, serial range for those years was D510001 to D659901.
Assuming excellent condition The Bodyguard is probably worth 300-$350, the Centennial a little bit less as new guns can be had for $350-$400, and J&G sales were moving ex security DAO Model 64s for $230 to $250 last year, with supply drying up I would expect it to be worth a little bit more than that at this time.
tx78218:
Your Model 65-3 .357 Magnum Military & Police Heavy Barrel Stainless dates to 1983.
7927x is an assembly number used to track parts in the factory.
ABKxxxx is the serial number, that is the number law enforcement would track. I suggest you delete the full serial number from your post, you don't need someone making a false claim of theft.
Your local sherriff/ police department should be able to do a stolen property check.
Nar:
You have a Model 10 manufactured in 1973 or 1974. If a tapered barrel then its a Model 10-5. If a heavy (straight) barrel then its a model 10-6. Occasionally guns made it out of the factory without model number stampings. The Model number should be on the frame under the cylinder yoke.
Shopping A Round:
Your Model 642-1 Centennial Airweight Stainless was manufactured between 1996 & 2002. The Standard Catalog of S&W doesn't give a CPH serial range, by late 2002 S&W were up to CFSxxxx, so my guess is that the CPHxxxx range was a special designation. Either that or some 642-1s were shipped several years after the 642-2 was introduced. As the gun is quite recent a call to S&W will clear that up as they will be able to give you the year.