Bottles blown glass 18th century

Lot of ten bottles to champagne likely 18th time. To be honest, it's hard to be 100% sure that the bottles shown above have actually all been blown to contain champagne. But several characteristics go well in this direction: typical shape, sturdy neck, twisted and streaked; bubbles embedded in non-uniform green/brown glass. They could also be bottles in burgundy... Two of them are cracked after a shock. Take away, no shipping. Price the prize 200 to debate.