Here is a photo showing the evolution of my Gibsons from full hollow to thinline to semi hollow, chambered then solid.:
Back row Kalamazoo archtops all weighing between 5 and 5.5 pounds. 1953 L7CN, 1957 L4CN, 1955 ES175N, 1960 ES125TC.
Front row: Memphis 2016 ES335 '58 RI at 7.9 lbs, Nashville 2011 CR '58 RI at 7.3 lbs and Nashville 2015 True Historic '59 at 8.15lbs.