Tiny QR code sticker on new Head racquet?

[WillGinRVA]

I bought six new reissue Head Graphene XT Speed Pro racquets from a legit online retailer. Four of them came with the usual Head QR sticker on the outside of the throat, but two came without the regular QR sticker and instead have a tiny sticker that looks like a QR code but isn't really one, on the inside of the throat. The colors are also slightly different too, so I'm guessing they're from a different factory.

Has anyone seen something like this?

https://imgur.com/a/VpeJ7vm

 

[Julian.Peter]

I have seen this before on non retail Head rackets like prototype paintjob pre release versions of upcoming rackets. But maybe it just depends on the production line / cost savings for specific rackets or after production coding procedures that are done to smaller numbers of rackets being produced. Small batches like prototypes and niche models and re-issues maybe getting these simple patches after painting instead of the regular codes on the outside of the throat.