My reference books do not list the model 815 but state that it also is the same model under the Winchester brand name made by Daisy, model 353. The model 353 is worth between $160 to $200 in excellent condition. It was not uncommon for other manufacture to make air guns under several different names and model numbers. This may be the reason the two models (815 & 353) are referenced in my catalogues
It would be worth around $55 in Excellent condition.
I suggest you try the link below. Or search the web for "Air gun repair."
Your asking about Hy Score pellet guns not Rifles, then most all the Hy Score pistols had a medallion or emblem on the grip.
This pistol was made by Crosman and it's really a model 150. The current value stands around (In Excellent Condition) $90- $110 BUT, add 30% for the Sears Ted Williams version.
The Crosman 180 pellet rifle was made between 1962-1967. Without more information it is not possible to give an estimate of value. You need to give it a value of the current condition like. Poor, Fair, Good, Very Good or Excellent condition. Before I can give and estimate of value.
Daisy never made a model 120 pellet gun. Are you sure you don't mean a 120 Pellet rifle? If this is what you are asking about then restate your question with additional information, such as the current condition of the rifle. Give it a ration like Poor, Fair, good, very good or excellent condition. Also stat if it is working or not. Then I will be able to give you an estimate of value.
about $350 to $500 very good to excellent condition
there are well over 50 different models made with the Benjamin on them. Which one are you asking about.
It all depends on the current condition of the pistol. You need to give it some sort of rating like Poor, Fair, Good, Very Good or Excellent. Then I can answer you.
In excellent working condition it would be worth between $75-$95. Like New it is worth around $110. W/O scope.
This model was manufactured between 1979 to 1989 it is a 24 shot bb pistol. In excellent condition it is worth around $45.
The Winchester 425 was made around 1974. It fires a .22 cal pellet at 500 FPS. Please state the current condition of the rifle to get an estimate of value. Is it in poor, fair, good, very good or excellent condition?