Vintage Peugeot pulls towards left when riding I've bought a second hand old Peugeot, I really enjoy the bike, but I'm having a balance problem with it, pulls to the left when riding. 

Could it be related with the handlebars? They are crooked.
Straighten your seat. It's pointed a bit to the right, causing your body to slightly slant to the left to compensate, moving center of the mass a bit to the left, causing whole bike to lean and turn left.