Unfortunately, I don't collect old Crosmans. I do, however, have a lot of experience modding the 13xx and 22xx series. Our focus on Crosman airguns will be getting the most out of these two popular series of airguns.
Here you will learn that your Crosman can do things you never imagined. I no longer mod Crosman airguns, but here is some information that you might find useful in your own modding ventures.
Choosing the Crosman That is Right for You
Reasons to buy a 13xx or other Crosman pumper
Reasons to buy a 22xx
Personally, I would recommend that you purchase a 1377 and a 2250. That'll put you around $120 in the hole, but will give you a carbine and pistol, 2 different calibers, and 2 different powerplants to experiment with. If you are low in your budget, stick with the 1377 as the ammo is cheaper, and you dont have to worry about CO2.
Where to go From Here: