VALENCIA, Spain (Reuters) - Sergio Ramos suffered an embarrassing mishap during Real Madrid's celebration of Wednesday's King's Cup triumph when he dropped the trophy under a bus at their victory parade.

As he lowered the imposing silver trophy, which weighs nine kilograms and measures 78 centimeters, it slipped from his grasp and under the front of the open-top vehicle.

The bus continued for several meters before the driver realized and photographs reproduced in local media suggested it had suffered serious damage.

This was later confirmed by Federico Alegre, the curator of the club's trophy collection, who told sports daily Marca Real had had to put a replica of the Cup on display at their Bernabeu stadium on Thursday.

"There's always a plan B," Marca quoted him as saying.

"I am not going to get into the state of the Cup because everyone saw from where it fell and that a bus ran over it ... you can imagine the state it was in," he added.

"We'll have to see if we can sort it out. The patient is in a coma but there are comas that can be overcome."

(Reporting by Iain Rogers, editing by Justin Palmer)