Here's a new pair of Front Brake Caliper Pistons (x2) for the following models from Ford -

FORD

Ford Escort Mk1 Mexico RS1600   (1972- 75) 

Ford Escort Mk1 Twin Cam             (1968- 72) 

Ford Escort Mk1 RS2000                 (1972- 75) 

(The first few months of production used a different type of seal & piston where there's no metal ring and a bellows type external seal - Compare yours to the picture first). 

You get a pair of Pistons here which is enough pistons to repair x1 caliper.

Please change the quantity to x2 if you want to replace the Pistons on both Calipers.

(I also have the front caliper seals, pads & fitting kits if you want them).