Tim Carder's book says "nearly 10,000.." which is good enough for me. It also says 500 fans were at Brighton station to greet the team at 2am and "some estimates said 100,000..." were on the victory parade the following day.
PG
My 16th birthday. Spent most of it on the (dry) 3rd Seagull Special that was delayed and arrived late. Just as we got in the ground, the first goal went in and we managed to bundle our way to a better viewing spot.
Recall running on the pitch at the end and standing on a concrete crash barrier...