Gmt root beer question

[tiger eye]

Hi Guys,

So i have managed to find a gmt root beer 20 years old on jubilee, i went to look at it earlier today, unfortunately i don't have any pics.

my question is regarding the jubilee bracelet, on pic i have seen online the bracelet has '50' stamped on the end of the bracelet the bracelet i saw earlier did not have this, however it did have the 402b stamped twice end link.

the watch looked and felt great, i didnt open it up today but they said they can and it has the 3185 calibre inside.

im going to back tommorow to purchase the watch, does anyone know if the jubillee bracelet must have the 50 stamp to be deemed as an original bracelet?

thanks in advance for your responses