Metal and heat variations during the manufacture process.
6
Yes, they made them
Modifed.
not known to have.
Double Action
@ 1982.
Revolvers do not have safetys
No such model.
No. Post over at Smith-wessonforum.com and someone will be able to look it up in the Standard Catalog of Smith and Wesson.
100-435 USD
Standard Catalog of Smith and Wesson, 3rd, ed.
You will have to contact S&W