It obviously depends on the model; gold watches are worth more than stainless steel. Judging by Ebay, 1968 Omega watches sell from between £150 and £750 (around $300 to $1500).
Depending on its exact condition and degree of wear, a 50 year old Omega Seamaster watch can be worth anywhere from a few hundred to several thousand dollars.
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.
A OMEGA Seamaster Calendar Automatic Bumper c. 1955 Cal 355 Vintage Mens Watch currently cost $1,398.71.
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
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