A beautiful coat for a great price! Your two options are to have the holes darned or rewoven. Darning is cheaper, and given that the fabric is quite dark, and the holes relatively small, you can probably get away with going that route. I'd take them to a local tailor for that work - darning isn't really a specialist operation. Reweaving is a different story. To have the holes rewoven will mean that a small bit of fabric from somewhere not obvious, perhaps from behind where the patch pockets sit, will be woven into the holes, thread by thread. The repair is almost totally invisible, but because the work is so time consuming, it is expensive. I can recommend a good reweaver that has done great work for me here in the US, but given that you are in Europe, someone else might have to provide you with recommendations, should you go that route. But, as I said, given that the holes are small and the fabric is dark, I think you'd be better served foregoing a reweaver and taking the coat to someone local and having them do the repairs.