This rifle is a bit unusual. It has a barreled action that was made in 1976 or 1977. That makes it what Anschutz shooters often call a "16xx" series barreled action, although Anschutz itself has not used the "16xx" series designation, staying instead with the previous series which was 14xx. (The next series was officially called the 18xx series, which includes the 1807, 1811, 1813 models as well as others.)
The barreled action has been either rebarreled or it is missing the angled intermediate ring located where the barrel and receiver meet. If it is the original barrel it should be 66cm from muzzle to bolt face, and would make it a 1607 barreled action. It has a 5075 trigger with a modified trigger blade.
The stock may have began its life as a 1411 stock that would be no later than 1973. Some time during that year the butt stock gained an adjustable cheek piece. The 1411 stock was made for the heavy 69 cm barreled Anschutz prone model.
Here's where the intermediate ring goes (the heavier and thicker 69cm barrel has only a slightly lower profile than the slightly shorter and slimmer 66cm barrel). The intermediate ring itself is shown below the following image. An example of a rifle with the ring follows.
As for an appraisal, often when rifles are modified its hard to figure out what is a reasonable estimate of its value. An unadulterated 1607 in good condition might be worth $1000 - $1200. Some shooters, particularly those interested in shooting from the bench may prefer the current stock configuration as the 3P stock has a sloping forestock while this one is parallel to the barrel. Shooters looking at the rifle would want to know more about the barrel. Is it original or does it have a slimmer profile than the standard Anschutz xx07 66cm barrel, which has a 22mm diameter. Why is the intermediate ring missing?
