To be honest I think you’ll be just fine. Delegates aren’t super strict when it comes to cubes like this, and it would be hard to make a case for it giving an unfair advantage. If I were you I would not talk to a delegate and just submit it since I doubt anyone will notice and you would probably just be wasting time asking them if it’s legal
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I have a cube that has this corner sticking out a little. Im going to a competition in a month and I want to know if my cube is comp legal.
Thank you
Provided the concerning corner piece is not a corner piece from another puzzle and does not significantly distinguish the corner from other pieces, this puzzle would be considered legal under example 7C of Regulation 3j's visual guide.
"Reasonable Wear" is ultimately up to delegate discretion, so "reasonable wear" is defined differently from region to region and even delegate to delegate.