This is a lovely stamp from Cameroon during British Occupation.  This is SG B10, the 1 Shilling on 1 Mark.  This one is in Mint Original Gum F/VF condition.  It is valued at L200 in the SG catalog.

This item is over $100 USD so I will be shipping it with priority mail in the states, and registered mail overseas.  This is to ensure that it reaches you in a safe and timely manner.