LONDON (Reuters) - The University of Oxford, the oldest university in the English speaking world, is planning to sell its first bond in the coming days armed with a newly-minted triple A credit rating.

Graduates queue to have their photograph taken after a graduation ceremony at Oxford University, Oxford, England, May 28, 2011. REUTERS/Paul Hackett

Teaching since 1096, Oxford has hired U.S. investment bank J.P. Morgan to raise at least 250 million pounds ($331.83 million) in what is expected to be an ultra-long 100-year bond.

Individual Oxford colleges have issued debt in the past but this planned sale, which will be marketed in London and Edinburgh this week, would be the university’s first as a whole.

Rating agency Moody’s assigned Oxford a ‘triple A’ rating on Tuesday ahead of the anticipated deal, matching the top grades of slightly younger UK rival Cambridge and top U.S. institutions like Harvard and Stanford.

The rating reflected “Oxford’s position as a world-leading research institution, attracting significant funding and leading academics,” Moody’s said, “in addition to the University’s strong balance sheet with a large endowment and low leverage.”

If the bond sale goes as planned, it would have the longest duration of its kind and add to a series of debt issuances from UK universities in recent years which have seen levels of government funding drop.

A number have also given shrill warnings that the UK’s split from the European Union could hurt their finances if they are no longer allowed to be part of lucrative European research projects and it becomes harder to keep or attract staff.

Oxford, which topped a Times global university ranking for the first time last year, was one of those. "To be honest we're really quite worried about it," its vice-chancellor Professor Louise Richardson said at the time. reut.rs/2AcCmum

One coincidence of Oxford’s timing meanwhile is that it comes as the UK government is trying to raise funding to cover some of the costs of the student loans it gives to UK learners.

The plan to re-package some 3.7 billion pounds of student loans via securitisation -- an instrument famously used to repackage sub-prime mortgage loans in the run-up to the 2008 financial crisis -- was expected to be launched earlier this year but was put on hold when Prime Minister Theresa May called a snap election.

($1 = 0.7534 pounds)