The Jules Verne has a special lacquer coating that produces strongly varying colour impressions under different light, partly even up to a purple shimmer. Slight colour differences between cap and barrel are therefore frequently due to lighting; a clear reddish tint independent of lighting only on the cap, on the other hand, is untypical and suggests a later exchange of a component. Original packaging with intact seal makes a subsequent exchange unlikely but does not necessarily rule it out. Recommended is a comparison with further Verne examples in very bright daylight or white lamp light.