TOZ-66 Tula

Can anyone provide any history or background on the Older Russian TOZ-66 Coach shotgun. I do know about 30 to 40 years ago, Universal Sporting Goods Co. in Flordia imported them from the Tula manufactuering Arnsel. I have read where the U.S. Government accused the Russian Gov. and the Tula factory of exporting weapons to Iran and Lybia, thus the USA imposed sanctions on Tula. I cannot get any information out of them. This TOZ-66, has a exposed, ears, double barrels. The trigger and locks are very strong. There is various engraved Hunting-Bird Dog, quail, phesants designs as well as scrolls onn the lock plates, breech, lever, trigger guard. IT has a hard red/ deep brown wood.1. What is the quality, value then and now,2. why is there no pertinent information is available on the TOZ-66 ? It 2 2/3 12 guage shells. Thanks