Vintage tin sign. Looks like someone has taken a few pot shots at it with an air rifle which adds to its charm. Dimensions are shown in pictures. This vintage tin warning sign features the message "Use Duck Ladders Or Crawling Boards" to caution individuals about a fragile roof. It falls under the category of Hardware Railwayana, specifically plaques or signs related to railway collectables. The sign likely served as a safety measure for railway workers or passengers, reflecting the historical significance of railway operations and the importance of adhering to safety protocols in that era. Its design and message provide a glimpse into the past practices and concerns within the railway industry.