They get darker in Sunlight hence they are called rose/pink changeable. The frame has oxidation it please check photos for details. The frame is etched with B&L ray Ban USA. The Glasses are etched with Ray ban on the Top right of the Right lenses and there is BL etching on the corner of the glasses.
Please refer to photos for the same. This could be a very rare item to add to your collection. In case of any doubts feel free to contact me. Do check out my other vintage ray ban sunglasses listings.