Each piece of leather might have unique scratches, scars and discolorations which add specific characteristics to natural handmade leather bag.
Few tips how to take care of genuine leather bags and other goods made from leather:
Small scratches can be removed by rubbing them gently with your finger. The natural oils on your hands will work nicely into the leather.
For larger scratches and marks apply a tiny amount of oil to the mark. Let it soak in for a few minutes. The excess should be wiped away with a clean soft cloth. At first you should always test any cream or oil on a small area of the bag before placing a bigger amount.
The new bag will give special leather odour which is very common and natural to leather goods. If the smell is a little overwhelming, better to add a small nice sachet to the leather bag filled for example with lavender petals etc. Keep it for a few days, that should be helpful to reduce the odour.
Small drop of baby oil, olive oil or even an essential oil might assist to lessen the smell as well. Take a clean soft cloth and wipe evenly over the bag.