Which model will fit this rubber-strap ?

Hi there, 

I just bought a IW324402 and in my package was a rubber-strap that will not fit my model

The strap has the number A66281 and the letters EUAX + XL

26mm total width and around 13,5mm for the "middle-hole"

To me it looks like it should fit your Mission Earth.

Sorry I googled your reference number and got it wrong from the pictures. Maybe it fits the Mission Earth but now comes with the dual time. Sorry not being able to help you further.

Your hint was right: IWA66281 XL fits the Ingenieur Automatic Ref. 3239.