AT RUBBER STRAP QUESTION divers only (LOL)

Hi, 
while DIVING with my AT 2000 in colder water, I encountered a problem with my suit and the strap of my watch. It was too small.. 
I know that there are straps issued with the IW329101 ("35 YEARS OCEAN 2000”) but also with other 2000 with click release system with have a strap that does the trick. See my watch and its peer (with the strap I mean). See below:

has anyone the reference number of the strap as shown in the pics.
it would be much appreciated. 
Or even better if someone has the strap and does not use it I would gladly purchase it from HIM/her.
please let me now Dear Forummers.