Hong Kong. (Norway - Thailand). 1937. Un-stamped envelope from Norway addressed to Hong Kong cancelled by 'Oslo/Norge Post "090" ore/ Wilh Wilhelmsen' meter cachet in red dated '19th Oct 37', routed via Bangkok '26th Oct' with Canton '29/10' and Hong Kong arrival '30th Oct' with bold framed instructional on face 'Flight Delayed' in violet. Very nice item of instructional mail not listed by Proud.