I have the following flymasks for sale, none of them perfect but all still useable, at £2 each.

Amigo, white, marked as horse-size but it looks smaller. Would fit a narrow face.

Shires XF, white and black.

Shires XF, Fly Defence, blue and black.

Bridleway XF, black and white.

Pro Series XF, Flyguard, black.

Collection from Winchester or posted at cost.