VPI 10.5i - Which armwands do I own?

Hi,

I do have 2 different VPI JMW 10.5i armwands.

apart from the different weight- 430 grams and 486 grams (without counter weights)- there are some additional differences which can be seen in the picture shown here:
http://i1137.photobucket.com/albums/n504/Helpho/Armwand105i.jpg

Pse help me to identify which armwands I have!!

Thanks vm in advance

Helmut