An interesting close-up shot of the diecast base of a V-1A Electrovoice ribbon microphone. This type of aluminum label with screened printing, and with variable information windows, used to be much more common. It definitely has a vintage look.
A variable information window allows manufacturers to show certain model designations within a larger group of products. Crowley and Tripp uses one such variable info label at the bottom of the Naked Eye Ribbon Microphone, in this case to show the serial number. In our case, the numbers are arranged in blocks and with letter designations that tell us something about the date, style and model number of a particular microphone.
more about this mic