Colman did not make a model 66, Crosman did. In fair working condition it is worth around $25-$35.
The Crosman model 66 Powermaster BB rifle was made between 1983 and 1986. In order to get and estimate of value you will have to state the current condition of the rifle. Is it still working? Is it in Poor, Fair, Good very Good or Excellent condition. without more information it is not possible to give and estimate of value. Re post you question with this information and I will try to give you a reasonable value.
about $10,000 depending on condition
300-500
$225-$275, depending on which version and condition.
Your Remington model 510 Target Master will bring between 195-250 dollars in the condition that you describe.
True value hardware stores
It was made between 1967 - 71. But no estimate of value can be determined without knowing the condition of the rifle.
Depends on which specific variant and condition.
What condition is it in? That determines the value.
These were made in .22 long rifle caliber. Value always depends on condition. $50 for shootable to $200 new
If the WORKING condition is Excellent. What condition is the pistol itself in. Is it also in Excellent condition or average condition
It would be worth between $325 - $400. It was made between 1964-1979.