A Bermuda banknote and coin in circulation during the mid-20th century are up for grabs at an online auction.

A Bermuda-British Administration $50 banknote is one of the items on sale at the Crown Currency Live Auction 46, with a top bid of €450 (about $520) at the time of publication.

A Bermuda 1959 silver crown is also available at the auction for €12, or just under $14.

The banknote was in circulation between 1978 and 1982 and has a serial number of 000009.

It was one of more than 1,000 notes verified by the Paper Money Guaranty, the world’s third largest paper money grading service that analyses and verifies the worth of banknotes.

The PMG praised the $50 note as a rarity, not only for its low serial number but for its quality.

According to its website, only one other banknote surpassed the Bermuda bill in the PMG’s Population Report, which rates the quality of paper money.

Other top notes included the Surinam 25,000 Gulden banknote from 2000 and a Greek 100 drachma banknote circulated in the late 1800s.

The Bermudian silver crown was graded by the Numismatic Guaranty Company, another third-party grading service for coins.

It was listed as being in mint condition, with a grade of 68 out of 70, indicating that it was “very sharply struck” during production and had “minuscule imperfections”.

The crown was one of more than 100 coins certified at the auction by the NGC.

It will be sold alongside more than two dozen “top pop” coins considered the highest grade, such as an Indian rupee from the princely state of Mewar that was minted in 1928.

The auction is set to go live on Monday before concluding the next day.