The auction for the napkin which famously launched Lionel Messi's Barcelona career as a 13-year-old opened this week with a guide price of 300,000-500,000 ($374,700-$624,500).

Bidding for the item stands at 220,000 and will be open with the British auction house Bonhams until May 17.

- Stream on ESPN+: LaLiga, Bundesliga, more (U.S.)
- Barcelona, Lionel Messi and the napkin: Oral history of his transfer, arranged 20 years ago

The sale was originally slated for for March but was postponed due to a dispute over the ownership of the napkin, which has been in the hands of Horacio Gaggioli, an Argentine agent, for the last two decades.

Josep Minguella, another advisor involved in the deal to bring Messi over from Argentina, claimed possession of the napkin following the news it would be auctioned earlier this year.

Gaggioli disputed this, while Bonhams told ESPN there were "no problems" regarding the sale of the napkin, which is listed on their website as "property of Horacio Gaggioli."

Minguella has not replied to ESPN's request for comment. With Messi's father, Jorge, beginning to doubt Barça's commitment to his son in 2000, the club's director of football at the time, Carles Rexach, hastily scrambled together an agreement on a napkin.

It was signed by Rexach, Minguella, who had helped bring Messi over from South America, and Gaggioli, who helped broker the deal, serving as a promise for a first contract.

Since then, it has remained under the ownership of Gaggioli in a secure vault in Andorra, the Principality to the north of Barcelona sandwiched between Spain and France.

Negotiations for it to be incorporated into Barça's museum at the club's Spotify Camp Nou stadium broke down in the past.

The napkin was originally signed on Dec. 14, 2000 at a tennis club in Barcelona after Rexach had received a frantic call from Jorge Messi threatening to take his son back to Argentina.

"That was when, thinking on my feet, I decided everything," Rexach told ESPN in 2020 to mark the 20th anniversary of the signing.

"Why a napkin? Because it was the only thing I had available to hand. I saw the only way to relax Jorge was signing something, giving him some proof, so I asked for a napkin from the waiter.

"I wrote: 'In Barcelona, on 14 December 2000 and in the presence of Messrs Minguella and Horacio, Carles Rexach, FC Barcelona's sporting director, hereby agrees, under his responsibility and regardless of any dissenting opinions, to sign the player Lionel Messi, provided that we keep to the amounts agreed upon.'

"I told Jorge that my signature was there and that there were witnesses, that with my name I would take direct responsibility, there was nothing else to talk about and to be patient for a few days because Leo could already consider himself a Barca player."

Messi, who now plays for MLS side Inter Miami, went on to become Barça's greatest ever player, making more appearances (778) and scoring more goals (672) than anyone else who has played for the club.

During over 20 years in Barcelona, he won 10 LaLiga titles, seven Copas del Rey and four Champions League trophies while playing for the club before joining Paris Saint-Germain and later Inter Miami.

Individually, he has won the Ballon d'Or a record eight times and has also been named The Best FIFA Men's Player on three occasions.

International success with Argentina had eluded him until recently, but he finally won the Copa América in 2021 and the World Cup in 2022 to go with the Olympic Gold Medal he won in 2008.