So I see that this thing does exist. Other than ebay anyone have an idea where to get one? And what is it called? Was it available for other models or just the 4002?

Hi, I have a vintage Beogram 4002 turntable recently refurbished and working fine. I have a memory of seeing an optional glass turntable platter offered as an accessory for this turntable and it had a weight to hold the record flat on the platter to enhance the sound. Does anyone have any information on this product? Was it a B and O product? Is it