Electric Fuel Pump

[Ken/Alabama]

I acquired this in line electric fuel pump in some parts I purchased. It’s a new pump and was still sealed in the plastic bag. I know it came from Fifth Avenue Parts in Kansas complete with instructions. Problem is that I don’t know if it’s 6 volt or 12 volt. There aren’t any other markings on it except for the ones in the photo. I’ve reached out to them but no luck. I think Randy who operated the place passed away. So is there anything I can do to determine whether or not it’s 6 or 12 volt ??