WW1 Royal Naval Transport Service officers bullion cap badge

A scarce First World War period 'Royal Naval Transport Service Officer cap badge', gilt foulded anchor set on black velvet ground within a blue silk ribbed circlet "RN TRANSPORT" gold bullion wreath surround surmounted by a padded red velvet King's Crown, the reverse with waxed black hessian lining and complete with woollen cap band. Good condition,