There's a reason for this odd detail in the famous 7-Eleven logo

Any Aussie would recognise the famous 7-Eleven sign at a glance. The convenience store chain has over 80,000 stores dotted around the world and is the go-to spot for a Slurpee or a road trip pit stop.

But there is one detail in the fluorescent sign that you may not have noticed before – the 'n' in the word 'Eleven' is not capitalised.

It's easy to miss the rogue lower-case letter in the iconic logo but once you notice it, it sticks out like a sore thumb.

While it seems odd, it turns out there is a reason behind the curious design choice.

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An earlier iteration of the logo had all six letters in the word 'Eleven' capitalised but the then-president of 7-Eleven's founding company Southland Corporation Joseph Thompson requested a redesign to make it stand out better on outdoor signs.

The redesign saw the sign become brighter changing the 7 from a dark red to the orange and red we know today and it saw the 'n' lose its capital status.

As it happens, the call is believed to have come from Thompson's wife who thought it would be a better design choice, according to Reader's Digest.

"One theory is that Thompson's wife thought the logo seemed a little harsh with all capital letters and suggested that the capital 'n' be changed to lowercase so the logo would look more graceful," 7-Eleven, Inc. (formerly Southland Corporation) told Reader's Digest.

The logo is made up of a big red and orange number '7' with the number 'Eleven' written out alphabetically through the middle.

Aside from the odd lower-case letter, you may also wonder where the store got its name from.

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7-Eleven had humble beginnings in 1937 when Southland Ice Company sold grocery staples out of its ice houses. As the company grew they rebranded to convenience shops called Tote'm stores inviting customers to "tote" away their purchases.

In 1946, after the business expanded the decision to rebrand came up again and the name 7-Eleven came about to reflect the store's extended opening hours from 7am to 11pm.

Obviously, today the store is known for being open 24 hours a day but this change didn't come until 1963 and the name 7-Eleven stuck.

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