Sierra Leone SG 59/62 Mint 1897 2½d on 6d dull purple and green strip with all four surcharge types se-tenant

1897 2½d on 6d dull purple and green, horizontal strip of four showing surcharge types 10+11+12+8 se-tenant. from the lower right corner of a sheet with plate number, large part o.g. Types 12 and 8 with tiny gum thins still an attractive and very scarce positional piece. (cat £645+) - P267000764