Can anyone determine Date of Manufacture OR Ship Date of this 638-3
seller doesn't know. Below is dang small image of Box Label.

SN: CJB2022

https://www.gunsamerica.com/UserImag...d_14879084.jpg

Smith & Wesson 638-3 Air Weight for sale

"CJB" isn't specifically listed in my Standard Catalog of Smith & Wesson reference. A bulk of the "CJ-" prefixes are in 2005 to 2008 and the "CJB" prefix run could be somewhere in those years. Three-letter prefixes aren't necessarily in a chronological order, however.

2005 – BCF, CHT, CJE, CJF, CJH, CJK, DAA
2006 – CJX, CLB, CLD, CLE, CMR, DAB, DAJ, DAK
2007 – CLJ, CLK, DAS, DAT, DAU, DAZ, DBA
2008 – CJN, DAK, DBN, DBU, DCB, DCD, DCK, DCL, DCM, DCN, DCP, DCT, DCU

Supica, Jim,Nahas, Richard. Standard Catalog of Smith & Wesson (Standard Catalog of Smith and Wesson) (Kindle Locations 17065-17068). F+W Media. Kindle Edition.

More info shows the 638-3 being introduced in 2002:

638-3 2002 Introduce Internal Key Lock System

Supica, Jim,Nahas, Richard. Standard Catalog of Smith & Wesson (Standard Catalog of Smith and Wesson) (Kindle Location 10729). F+W Media. Kindle Edition.

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66/642/640/627/586/60/638/686

Thank you, sir! That's pretty close.