This is an old pistol. One of my favorites. I own 3 of them. It was made between 1964-1985 in three variations. In Very good to Excellent condition it is worth between $75-$90.
Source: Bluebook of Airguns.
If you want the owners manual see the link below.
What condition is it in. That determines the value
What model is it. How old is it, what condition is it in, is it still working?
It would be worth around $65 in Excellent shape.
In excellent working condition it would be worth between $75-$95. Like New it is worth around $110. W/O scope.
I have absolutely no information on a Crosman model 143. Are you sure it isn't a model 140 or model 147. I even searched the net and can not find anything on a model 143.
This model was made between 1966 to 1983 in fair condition it is worth between $45 - $70
It would be worth between $65 - $75. Add 20% for the box
Crosman made the pellet and bb guns for Sears starting in the 50's I am not sure when they stopped, I think probably sometime during the 70's. Sounds like you have a variation of the pumpmaster Crosman, so best guess, is if its older, anywhere from $50-$100. You can probably check on Crosman Forums, and get a better suited answer there. Hope it helps.
The model 600 was made between 1960-1970 it is a .22 caliber pellet pistol, in the condition you describe it is worth in the area of $275. Plus, add 20% for original box and papers.
the Crosman Model 400 was made in two variations. The first was made between 1957-62 the second was made between 1962-64. It's a .22 caliber pellet rifle. Without more information about the condition of the rifle it is not possible to give you and estimate of value.
Crosman and Daisy made air rifles for Sears under the JC Higgins name. Yours is a model 400 Crosman. However you did not state the condition of the rifle so no estimate of value can be given. However yours was made between 1957-64.
The Crosman 38T Target came in .177 & .22 caliber. It was manufactured in 3 different variations over the years. (1964-85) In excellent condition it is worth around $90 plus another 20% for the original box.