What is the difference between these model 19’s

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Model 19 engineering changes according to Wikipedia.

19 (1957): Stamping of model number.
19-1 (1959): Change extractor rod, right to left-hand thread.
19-2 (1961): Cylinder stop changed, deleted triggerguard screw.
(1963): Introduce 6" barrel.
(1963): 50 manufactured with 2.5" barrel, serial range K544672–K544721.
(1966): Introduce 2.5" barrel as standard.
19-3 (1967): Relocation of rear sight leaf screw.
(1968): Delete diamond-insert grip.
19-4 (1977): Change gas ring from yoke to cylinder. (Not really an "improvement". It did make it slightly easier to clean if there was heavy leading, but basically was a cost-cutting measure.)
19-5 (1982): Eliminate cylinder counterbore and pinned barrel; small change in cylinder length to 1.62".
19-6 (1988): New yoke retention system; radius stud package; floating hand; hammer nose bushing.
(1992): Blue finish only is catalogued.
19-7 (1994): Change to Uncle Mike's Combat synthetic grips; drill and tap frame; change extractor; change rear sight leaf.
(1995–96): Delete square butt features.
(1996): Discontinue 6" barrel production; begin shipments in blue foam-filled plastic cases.
(1997): Change to MIM thumbpiece; ship with Master trigger locks; change to MIM trigger.
19-8 (1998): Change in frame design: cylinder stop stud eliminated; eliminate serrated tangs; change to MIM hammer with floating firing pin; change internal lockwork, September 1998.
(1999): Discontinue 2 1/2" barrel.
 
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Do you have a list like that for model 66’s too?

Model 66
66 (1971): Stamping of each model.
66-1 (1977): Changed the gas ring from the yoke to the cylinder.
66-2 (1982): Eliminated pinned and recessed, slightly lengthened cylinder.
66-3 (1986): New yoke retention system/radius stud package/hammer nose bushing/floating hand.
66-4 (1994): Change rear sight leaf, drill and tap frame, introduce Uncle Mike's grips, change extractor.
66-5 (1998): Change in frame design: eliminate cylinder stop stud/eliminate serrated tangs/change to MIM hammer with floating firing pin/change internal lockwork.
66-6 (2002): Introduced internal lock.
66-7 (?): Two piece barrel and internal lock,
(2005): Discontinued.
66-8 (2014): Reintroduced with 4.25" barrel in 2014 and later with a 2.75" barrel in 2017.

Google-fu... Also from the S&W Model 19 Wikipedia web page.

Edmo
 
Having a 19-3 from 1976 and a 66-1 from 1979 both 4 inch this was a reminder of changes through the years. Thank for the posts
 
I am not that computer literate. I would not know what to ask exactly.
I am grateful for the knowledge here and the help
 
I am not that computer literate. I would not know what to ask exactly.
I am grateful for the knowledge here and the help

Blueinterceptor,

Click on the hyperlink below and then scroll down the page...

Also know that Wikipedia can be suspect in some of their information. There are guys here who are much more knowledgeable about our wheel guns.

S&W Model 19 in Wikipedia

Edmo
 
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Blueinterceptor,

Click on the hyperlink below and then scroll down the page...

Also know that Wikipedia can be suspect in some of their information. There are guys here who are much more knowledgeable about our wheel guns.

S&W Model 19 in Wikipedia

Edmo



Thank you sir
I got the information I needed from the 2 posters above.
 
Ah! Your sarcasm-fu is STRONG.

Thank you Grasshoppa! Your notice is equally strong! Thank you for taking time to recognize what I do!

I had an instructor in the Military whose last name was Blair. When he spoke we called it Blair Fu because nobody had a clue what he was talking about! :D
 

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