Kubota with Z number

Hello. I'm new here, work in agricultural safety, trying to understand gray market Kubotas. I have seen photos of tractors with nice Kubota decals with a Z number on the hood. Since Z numbers were used for Zen-Nohs, can I assume this was a Zen-Noh and someone changed the decal to Kubota? Or did Kubota actually market tractors with the Kubota name and Z number on the hood?

Thanks,
Mark

Thanks. I appreciate it. I guess somebody decided the tractor would be easier to sell with a Kubota decal but did not remove the Z from the number. Amazing what you can do with new paint and decals.