How do you make a 'sealed' bid by e-mail?

Sorry 'im indoors but how do you make a sealed bid by e-mail? Surely this is wide open to a bit of nobbling to anyone who knows will jago@bhafc etc? I am confident that not all staff are as dishonest as Henry but given the inept way the Gus t-shirts were distributed, supposedly just to ticket purchasers (not stewards, turnstile operators etc), how confident can we be with regards to fairness in the auction?

I would like one to go with the 100+ others dating back to 72 but fear I miss out due to limited numbers.

Many thanks as usual

HCQ

p.s. Not a personal dig just trying to establish fact and secure one!

I can assure you it will be 100% fair.