Portofino 3513 straight or curved springbars?

Hi,

I got my wife a 3513 and was thinking of changing it to a leather strap. I
think the bracelet version comes with straight springbars but does the leather
strap versions come with curved springbars? I looked up some images of the
leather strap versions online and I think they looked curved!

Here is the mandatory pic
haha

Very nice pair.

I don't think curved spring bars were available during the life of the 3513

Thanks! I think they have straight spring bars too but I do see some curved
ones out there, about 1 out of 10 so I assume those were retro-fitted.

I'm more than certain the picture you just posted is not an IWC strap.