unused 1912-32 (c.) the specialised mint collection with MCA and Script CA values to $5 (12, with a corner plate block of four), the emphasis of the collection appears to be on detailing printings showing paper types and plate slugs (numbers to 25), together with printing flaws and curiosities; also 1922 Malaya Borneo Exhibition MCA watermark $1 mint marginal example showing plate slug. A most interesting lot. (several hundred)