Thought I'd post two pennies here today. The first is an 1826 rev A plain saltire. Not the rarest, but this one is in absolutely superb condition. UNC where the red lustre has mostly faded to brown, but still showing through very brightly when the coin is turned. Really pleased with this one.
The second is the 1827 I won from the recent DNW Ian Sawden collection. Again not the best, but these are extremely difficult (if not virtually impossible) to obtain in high grade. Most are worn and pitted. This shows very slight pitting. The story goes that the 1827 mintage was shipped to Australia and that whilst stored in the ship's hold, seawater got in and soaked the coins, thus causing the pitting - some much worse than others. Not seen any official corroboration, but it makes absolute sense, and is wholly believable.
ETA: an uncirculated 1827 specimen fetched an eye watering £21k hammer at the December 2014 LCA.