I have a couple revolvers that I have, I think, determined the build date of from using the Standard Catalog of S&W book. I have a couple N frames that when I reference the same book I only get a year and the starting serial number - no ending date and serial number. What other reference book(s) are available that will give a more through date vs serial number listing?
Yes, I know I can ask on this forum for the approximate dates, but I would like to be able to do it myself.
There are no other reference books. The SCSW is the place to go
Dates of manufacture were not recorded by the Factory in their first one hundred and thirty or so years of production. Smith & Wesson is a tool maker, not a collectible maker and as such the records seldom satisfy our thirst for information about our firearms, Occasionally one firearm will have a letter or note but it is the exception
Remember that during all of those years the records were hand written and kept in file cabinets or boxes or who knows what
It was not until Smith & Wesson computerized in the 1980s that more information began to be recorded and us collectors got a little happier

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If you have a Smith & Wesson firearm with a computer printed label on the box, 98%+ of the time the date of manufacture is printed right on that end label under the heading
SPEC ORD. There are exceptions. Usually when the word SPECIAL appears under the FEATURES heading the
SPEC ORD number has a different meaning
That first digit in that four digit number is the last digit in the year of manufacture, so you need to know the decade of manufacture which is usually not too hard. The remaining three are the day of manufacture in Julian format. In more recent years the Factory has just gone to printing the actual date on the label in readable format
Also during the years where certain State required a fired cartridge casing, the dated, sealed envelope containing the cartridge was usually created withing a few days of manufacture
Prior to these Modern, internet connected times we live in it was not unusual for Dates of manufacture (as obtained from SCSW's serial number lists) and shipping dates (obtained from Historical letters) being significantly different.
Most often it is just weeks or months but there have been examples of years between the two events and in some rare cases decades.
I have a revolver that was manufactured in the 1960s (C8836xx) but did not ship from Smith & Wesson until 1996, yes this is the rare bird but it happens
Relying on the information of a Historical letter of an adjoining or nearby serial number is in no way accurate when we are talking about the pre-computerized era. Things were just grabbed off shelves and seldom shipped in the same order they were manufactured
Today, Factories do not want inventory on the shelves and firearms often ship out shortly after manufacture so those events are much closer together
By The Way, We all owe Roy Jinks and other like minded folks a HUGE Debt of Gratitude for the records we do have. The Factory tossed their paper records in the dumpster. After all, that old information was no use to them. Mr Jinks personally recovered those records and preserved them for us. Other folks have done similar things to ensure that Collectors have a repository of knowledge to draw from
So if you get the chance at one of the Symposiums, buy Mr Jinks a glass of Scotch as a Thank You for the foresight and vision that he had on our behalf. He favors 18 Year Old Laphroaig