On order to give you an answer, you need to give more information about the BB guns condition. Give it some sort of rating like Poor, fair, good, very good or Excellent. Then I may be able to give it an estimate of value.
Model 454 Mfg 1972-82. Crosman no longer repairs this model but you can search the web under "Air Gun repair" and find a location near you to repair it. However remember that this gun in PERFECT condition is only worth about $50 at best.
What condition is it in. That determines the value
there are over 100 different model Crosman airguns. You need to specify the model and the condition of the Crosman you want to know about
What model is it. How old is it, what condition is it in, is it still working?
It would be worth somewhere between $35 -$55
It was made between 1978-82. State the condition of the pistol to get an estimate of value. Is it still working? Rate it poor to excellent or like new?
I can not find a CROSMAN model 350 BB gun, Do you mean a V350 BB rifle. If so then one in good condition is worth between $55-$70
Crosman stopped making this gun in 1982. They no longer have parts available, however you can still get it repaired by an outside source. Try checking the Web. Search using "Airgun repair." find someone near you and contact them. See the link below. The seal kit is $13.99.
As far as I know the Crosman Phantom is not a BB gun but a pellet rifle. If you want to see the parts list for the rifle then see the Crosman link below.
Crosman offers a service to locate air gun repair shops that service older Crosman air guns. See the link below.
Are you talking about a Gun or a Rifle? Please post the question again, except this time please add the model number, you will find it on the barrel. As far as I know Daisy doesn't make a 2006 10 pump BB Gun. They do make several single pump air rifles. However Crosman does make a multi pump Air gun, the Crosman American Classic. It this what you are asking?
Both Daisy and Crosman air guns made BB guns for Sears. you will have to state the model to get an estimate of the value. Check the model number on the gun, any model that begins with 126 was made by Crosman air gun and any model that begins with 799 was made by Daisy air gun.