S&W has made dozens upon dozens upon dozens of variations among its weapons. You need to provide at a minimum if it is a revolver, pistol or shotgun.
On the end label of the box.
You will have to find a copy of The Standard Catalog of Smith and Wesson and check each model number.
a 629 in 7.5 inch ss unfluted cylinder
To answer your question would take a few days of looking in the Standard Catalog of S&W, 3rd edition
The Smith & Wesson revolver product code 103801 refers to the Model 686, which is a double-action revolver chambered for .357 Magnum and .38 Special cartridges. It features a stainless steel construction, a 4-inch barrel, and is known for its durability and accuracy. The Model 686 is popular for both recreational shooting and self-defense purposes.
A few hundred to a thousand or so.
You will have to call S&W. If you have the 3rd ed of the Standard Catalog of S&W, you might find it in there, but, it will take you a few days.
date code.
If you have the box, post the product code. S&W has made non-standard barrel lengths at various times for various distributors.
The Smith & Wesson product code 102715 refers to the M&P Shield EZ in .380 ACP. This model is designed for easy operation, featuring a lightweight frame, easy-to-rack slide, and an intuitive grip safety, making it suitable for both new and experienced shooters. It typically includes an 8-round magazine and is popular for personal defense and concealed carry.
Impossible to answer without a detailed description to include, box, papers, finish, caliber, and Product Code. Range 100-1000 USD or more.
Contact S&W customer service through their website