Howdy
First of all, find out if it is a K-32 Masterpiece or a Model 16.
The K-32 Masterpiece was introduced in 1946. Companion piece to the K-22 Masterpiece and the K-38 Masterpiece.
The K-32 Masterpiece was built on the K frame, with five screws, short cocking action, anti-backlash trigger, six groove tang and serrated trigger. Micrometer click rear sight and 1/8" or 1/10" Patridge front sights were cataloged. Chambered for 32 S&W Long. Quite a scarce gun, exact numbers are hard to pin down.
I'm going to quote the Standard Catalog of Smith and Wesson now with a list of serial numbers:
"Known Serial Numbers include all of K58921 through K58970 and K67601 - 67670, along with some guns in K767574 - K767599 and K68470 - K68530 ranges.
All of these have the narrow rib. In 1950 the wide rib was introduced, and some K-32s from 1956 will be found in the K271792 - K271836 serial number range."
In 1957 Smith and Wesson changed over to a model number system and the K-32 became the Model 16.
The Model 16 is often listed as a K-32, but if it has MOD-16 or something similar stamped on the frame under the yoke (the hinge the cylinder swings on) it is a Model 16.
The Model 16-2 (1961) did away with the screw in front of the trigger guard, making it a four screw revolver.
The Model 16-3 (1967) relocated the rear sight leaf screw.
In 1968 the diamond on the grips was done away with.
The Model 16 was discontinued in the catalog in 1974.
In 1989 the Model 16-4 was reintroduced, with a full lug underbarrel, chambered for 32 H&R Magnum.
Discontinued in 1993.
This model will have MOD 16, or MOD 16-1, MOD 16-2, MOD 16-3, or MOD 16-4 stamped on the frame under the yoke.
The Model 16-4 is worth considerably less than the others.
This K-32 Masterpiece left the factory in 1954. This should give you a good idea what one looks like.
I paid considerably more than $1999 for it. It is in almost spotless condition. For what it's worth, I never buy a firearm that I have not been able to personally inspect, particularly a nice one like this.
P.S. I got curious and found the revolver you are looking at. Overall condition is a bit worn, not as nice as mine, it shows some honest wear. I looked up the Serial Number and it looks like it shipped in 1955. It has the earlier "Speed Hammer" unlike mine which has a standard short throw hammer. Interesting because according to Roy Jinks mine shipped in December of 1954, but has a later style hammer than the one you are looking at.
As I say, I never buy a firearm that I have not been able to personally inspect. But $2000 sounds about right for that one if everything checks out.