I bought this pair of celadon cups last week and am not sure of age (the seller suggested they were Qianlong).
They are very small (only 3 inches wide), and were very difficult to clean, which suggests to me they are not brand new.
More pics below:
drive.google.com/open?id=1VtdhoPZMXLyh4GIJRnMrCc7wZ3lSUpDh
Perhaps Jiaqing or Daoguang.