I'm unable to find a fat scale here.

This is of course a rough guess... that pic is kinda tough 15ish%

I'm thinking closer to 12 or 13 myself.

Perhaps as low as 12%, as high as 15%. Kinda hard to tell from that side picture. It's easier to tell with a relaxed front-view picture.

Thanks for your comments. I will also send a relaxed front picture soon