OP
Agree with Post 9 and other posts regarding 1985. My SCSW also seems to agree:
1985 – AAV, ACC, ACJ, ADA, ADP, ADZ, AEF, AEH, AEM, AER, AEW, AFB, AFK, AFL, AFN, AFR, AFS, AHA, AHB, AHC, AHJ, AHP, AHS, AHT, AHV, AJB, AJD, AJJ, AJH, ALA, ALB, ALC, ALU, ALV, ALW
Supica, Jim; Nahas, Richard. Standard Catalog of Smith & Wesson (Standard Catalog of Smith and Wesson) (p. 491). Gun Digest Media. Kindle Edition.
The Standard Catalog of S&W 4th Edition also lists the ALV prefix under 1983.