It was most-likely made between 1960-74 and sold through Dianawerk GmbH & CO.
This is a .177 pellet rifle.
I have seen the priced $450 - $525.
Gun shop
your Winchester model 1897 which was made in 1956,is selling for between 300-450 dollars depending on the amount of original finish remaining on the wood and metal.
pretty common gun around 350 - 450
Your Winchester model 1894AE which was made in 1988 will bring between 250-450 dollars,depending on the amount of original finish remaining and a good bore.
In the condition that you have described,your Winchester model 1894 rifle which was made in the year 1956 will bring between 450-550 dollars on today,s market.
Your Winchester model 59 in the stated mint condition will bring between 450-525 dollars on todays market.
Your winchester model 12 is valued at between 450-800 dollars depending on the amount of original finish remaining.
in good condition, anywhere from $450-$600.
A Winchester model 20 shotgun in good condition(80%) original condition is valued at between 350-450 dollars.
Your Winchester model 1907 chambered in 351WSL(Winchester Self Loading)and was made in the last 3 years of production will bring between 175-450 dollars,for a rifle showing between 10%-80% of its original finish,and a good bore.These rifles were made from 1907-1957.