Would you believe 175 g? 
I wouldn’t believe it, only I weighed it myself. And yes, it does say ‘150 g’ on the toy. The 175 g Star Glow Frisbee I bought in 2019 weighs in at 177 g. The vintage one and the new one are just about the same size, though the vintage, black, ‘Master Tournament 150g’ is more interesting because it has ‘record grooves’ and a ‘cupola’. So it’s reasonable that they weigh about the same. But… It actually says ‘150g’ on the disc!
ETA: The Wham-O boomerang came today too. I was going to remove the ‘2.99’ price tag that was on it, but it was from Gemco. Yes, I had a Gemco card. I still have a dome tent I bought there, and I have a Gemco manual-drip coffee urn too.