MasterB

Does anyone out there have tech info on an Epiphone Masterbuilt DR-500 RANGH It's a Dreadnought, Rosewood back & sides, Gold Grover open tuners, Spruce top (maybe) No electronics. Stamped on the neck block 0309210043, on label G0100043

I have an Epiphone Masterbuilt DR-500 RANGH I am trying to decipher what the letters mean and the year made. It's a Dreadnought, Rosewood back and sides, Gold hardware, I think the top is Spruce but it could be Adirondack, nat. satin finish. Serial number stamped on the neck block inside is 0309210043 and on the label it is G0100043. If anyone knows anything about these guitars please send me some info. It's an absolute cannon and sounds awesome!