Rolex Explorer II 1655 matching hand and dial

[a5th72]

Hi, I am new to this forum and newbie on vintage Rolex, I got this Rolex 1655 from my dad, he had this watch since brand new, I don't know the exact year, I was born 1972, my mom told me he bought this watch around 72-75, she don't know the exact year, my question is, the watch has a straight hand but on the dial (on bottom) there is written " T SWISS <25 T" isn't it supposed to be "T SWISS T"
Please advise as I am newbie.
Thank you.