Yours is an exception for sure - Bogner always made sure to update to the LED for rev-blue models, even for ones sent in for conversion. Consider it a rare occurance or have it checked for being rev-blue
Rev1 bogners are super rare and have more gain than rev2. At least IMO. They are very saturated.
Twinjets can have a blue LED as well, it's a taper modification for the pregain control to help get the preamp to clean up at higher volumes for the lower-gain channel