In trying to help a member on the Mizuno FB site understand the composition of the Mizuno serial number, I went to Ebay to see if I could get an example of a current set as it seems that many more these days are custom sets as a result of a fitting. I came across a set of MP 20 MMC's but the serial number is a tad confusing. It suggests that this custom set was built at Cumbernauld on 11 September 2020 ?? Is this a possible error at the factory or are these most likely fakes? If the latter, its the first time I've seen the correct format of a serial number being used, albeit a touch early. Also the gap between the last number and the alpha character seems wider than anything I've got at home spanning MP5, MP-H5, MP18 MMC etc.