GMT II Z series with T<25 Dial? Help please

[Hyoulden]

https://imgur.com/a/14dOy


I am trying to find out what year my GMT Master II is. it's a Two-tone 18k gold with jubilee Bracelet, pre-ceramic, Z- serial Z3xxxxx, with a holes case and non-stick dial - box came with matching papers said was purchase in 2006 serial number and model # matches(not plastic card)



I thought Z series GMT Master II's were from 2005/2006 but the T<25 Dials are form 1999?
has my rolex been changed?




does any one have any answers?? :/