Does Titleist use different fonts for serial number etching on the same models?

I just bought a new set of 2019 T100 iron set and it has a different looking font than another set of same T100 iron sets I have seen. When I registered them on the Titleist website, the serial number did bring up the correct iron set. The other T100 set with different serial number font shows the correct iron set on Titleist as well. I just want to double check to know if any are counterfeit.