A question about some crt's ( round bw picture tubes)

[rca2000]

Hello Guys-- I am about to become the owner of some old tv parts. There are several old crt's in the lot. I am curious, if anyone knows if any of these tubes are useful, and if anyone might want any of them.

1- 5fp4 (there are 3 of these, two in boxes. the ("p4) designation would seem to suggest tv use).
2- 5fp7-(looks lke a 5fp4.)
3- 5fp11-?( screen is lighter than a ("p4)
4- 7cp4 ( there are 2 of these)(again, suggest tv use)
5- 10sp4- (looks like a 10bp4.)

There are lots of other good parts, such as flybacks, and yokes. When i get them, I'll take a look at some numbers.