I don't know how much exactly but a lot. The fact that it is from Sauer (now part of Sig-Sauer) and that it is a fine and now discontinued sport rifle will make it VERY valuable. Unless of course it is in absolutely terrible condition.
A Browning A-500g shotgun in excellent condition is worth about 900 dollars.
This rifle (Mauser Model 2000) is worth $350 in excellent condition.
The Model 188 was made between 1979-89. In excellent condition it is worth $45
It would be worth around $55 in Excellent condition.
In excellent condition it would be worth between $90 - $105
In Excellent condition it would be worth $90 to $105. It was made between 1969 and 1993
Made in 1979. In excellent condition it would be worth around $35
$250 - $300.00 US dollars depending on the condition.
The 179 Peacemaker was made from 1960 to 81. In excellent condition it is worth around $110
$350-$400 in excellent condition
that is a opinion