Mark 2c SO (ex FO) M6415Never before produced in ready to run form in any scale, accurascale is excited to reveal the latest addition to its eagerly anticipated range of 4mm OO gauge Mk. 2 coaching stock, the late style Mk. 2c variant with their characteristic small 'air con' style toilet windows. Famously designed to be retrofitted with air conditioning equipment, a modification that never took place, 150 vehicles were built at Litchurch Lane, Derby, in 1969 70 to five