No doubt this one has done the rounds before.
If you are buying new cylinders, how many months on the manufacturers stamp date would you accept as still being "new".
I have just bought new cylinders and I am not overly happy with dates on them because a) I bought on pre-order and b) I asked when ordering if they were recently manufactured and was told they would be. I am in touch with the shop and so far they are giving me the run around. However, I will wait to see where that leads before naming the shop.