H Logo Exploration

Hi all.
I just finished a logo design for a golf putter grips manufacturer, "H". We're satisfied with the final result, but no matter how seemingly original the idea is, there's always a chance someone has come up with something similar. We're concerned that this logo might resemble other logos, so I'd like to ask you all for some feedback about it. If you have come across/spotted logos that are similar with this, kindly let me know. Your help is greatly appreciated.

Thank you!