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Wow what a nice find! That's real bargain at 5$ apiece!
Well the reason that TV's does not use Electrostatic deflection for ther CRT is that if you were to deflect a 110° CRT electrostaticly you would need 7000-8000 volts to move the beam the +/-55°. It is not practically to do this.
The reason scopes used Electrostatic deflection is because it is linear, and way faster than magnetic. The magnetic deflection has a large inductance, and moving the beam fast requires a LOT of power.
// Per.
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