so these arent Vintage?
Nope, Sylvania still makes BT shaped lamps on 175 watt and up MH lamps, and CMH lamps and then they make ET shape on lower wattage mogul HPS lamps (same as the auction you showed us) and tubular shape (without the dimple) on higher wattage HPS lamps.....
so really offically as of now lamps from 1980 and up are not vintage (although for me, if a MH or a HPS is from the 80s, its a really nice find) The new ET shape did not come out until late 80s I think 1988 to be exact...