Rare Coca Cola Coke Coasters Set Bottle or Glass Blotter Laser Engraved

This is from the 1980 Coca Cola Company Technical Conference in Port St. Lucie, Florida, which is held occasionally to discuss new ideas and keeping up with technology as it was changing/advancing around this time frame. The wood base is laser-etched with the company name, both sides are identical, with a brass (?) bolster on each side to keep the leather coasters contained. There are 5 coasters, each identical, with one sided design.
This item is in great shape and I've held on to it for two decades at least and it was kept safely stored. I have never stumbled across another set of these.
Thank you for looking.