4 months ago i acquired a beautiful crown graphic 4x5 camera with a top mounted rangefinder for 300 dollars, the camera is fully functional and takes great photographs! it also has a graflite flash with 7 inch reflector, my question is, what type of bulb does the top mounted rangelite take? I know it’s an e10 miniature base. But I’m having trouble finding the correct size and voltage bulb. I’ve found a 2.1v bulb but the filament is not the correct shape, (it’s an upside down “U” whereas It requires a “straight” filament with minimal bend in it) any help would be appreciated!