This is a classic MARVEL Exposure Meter from G.M. Labs, sold exclusively by Sears, Roebuck & Co. It is a vintage piece of photographic equipment that comes complete with a carry neck strap, making it easy to take with you on location shoots. The model number is 6250 and it was manufactured in the United States. This exposure meter is suitable for use with various types of cameras and lighting situations, making it a valuable addition to any photographer's collection.

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