box of A4 stiff 'leatherboard' card for craft or binding (Hollingbury BN1)

A part-used box of A4 'leatherboard' - stiff embossed card, used for binding handouts etc.

The card is of a maroon colour and has a leather pattern embossed on it, hence the name.

I think there were originally 500 sheets; there are probably 400 or more left.

Collection by arrangement from the Hollingbury area. Please give me an idea of your intended use.