Where to find a date of manufacture list by serial number for Manhurin as well as for Smith and Wesson revolvers.

Wondering if anyone might know where I might find a date of manufacture listing by serial number for Manhurin as well as for Smith and Wesson revolvers.

In California it's easier for us to purchase many types of firearms if they are over 50 years of age. 

On Gunbroker and some of the other firearm listing websites that i search, it seems that the majority of sellers do not list many of their products as C&R.... and when i email them they rarely have that information, but might supply me with a serial number.

thank you

FWIW the CA DOJ exempts Manhurin 38sp as Olympic pistols (along with many other makes, mostly .22):

https://oag.ca.gov/sites/all/files/agweb/pdfs/firearms/forms/op.pdf

that is so helpful....thank you

This site lists the serial prefixes and lots of Manurhin info. No specific years, but you can deduce the approximate time period. This is the best reference guide I found for all things Manurhin. 

https://larvatus.livejournal.com/520133.html

thank you, i'll download it just now

For S&W the best source to my knowledge is in the book Standard Catalog of Smith & Wesson by Supica and Nahas. It's not exact, in come cases there are just date ranges. My copy is an older edition (2001), there could be corrections and updates since then.