They only made a total of around 750 grade A1 LC Smiths. That's not very many for a total production.
10 were made in 16ga.
These are pre-1913 LC Smiths. The A1 was only available for about 10 yrs IIRC ,,1890/91 to around 1901.
It should have damascus bbls and ejectors.
The engraving is not at all extensive though some of them have a bit more coverage and different style scroll than others.
Just different engravers doing their work.
Usually a dog on either side plate and a game bird on the trigger guard bow (a Woodcock very often the subject.)
The side plate engraving can leave the dog standing very alone with a few scroll enhancements on the plate. Or quite a bit of extra work to form a 'scene' around the dog will have been added.
The guns were avail w/ straight grip,,half pistol grip,,and full pistol grip stocks.
Checkered grip and forend, Nice figured wood was used, European Walnut.
Value depends on condition of course.
All original with some existing factory finish generally beats a refinished gun no matter who did the work.
Some redone work is Ok if it is 'restoration' and not upgrading just for the sake of trying to make a buck.
Damaged wood or metal repaired and brought back to the level of finish to match the original finish still on the gun would be real restoration.
Repair of things like the ejectors is good if done with the care it deserves.
No ham handed repairs or alterations. They just beat the value into the ground.
The 12ga A1 Grade depending on the condition of course was a $4000+ range collectors gun.
The rare 16ga A1 usually priced at about double from what I've seen.
But that was before the vintage SxS market took a dive.
SxS vintage guns are a bit of a drag on the market of late. So you can likely cut those values by 1/3 for todays reality market.
These are collector/investment gun(s),,not shooters (though they will do fine for that too)
...and right now buying vintage SxS's as an investment isn't a real good path to follow IMO unless they are really priced at the bottom.
Check some recent auctions and sales for the same A1 16ga model (or 12ga for comparison) sold prices.
A blue book won't give you a real time value.
Also be aware that there are many fake LCS A1 grade shotguns out.
Just like PArker, Fox and some others, taking a lower grade starter gun and adding the necessary embellishments to 'make it an A1' or some other Grade is a business with some people.
Even changing serial#'s and other markings to match factory records.
Nothing is beyond their reach as long as a handfull of cash is the reward.
Examine everything carefully and with upmost scrutiny.
Knowing the gun and it's history can put a lot of that nonsense to bed in a hurry. But a high grade gun just placed out for sale,,you should always be wary of.