S&W .38 Double Action ID help

[Pancho Peacemaker]

I need help with identification of the S&W top break .38 Double Action line (not the Safety Hammerless line.)

I know they produced a 1st through 5th model and a "perfected" model.

Does someone have a suggested reference to differentiate the models' features?

[St. George]

Try Supica's 'The Standard Catalog of Smith & Wesson'.

Vaya,

Scouts Out!