Gold Crown 1, early ones did not have adjustable feet. They all had the rail mounting plate on the bottom of the rail. Very heavy pinned slates from the USA.
Gold crown 2"s. have adjustable feet and they changed the rail mounting to up inside the rail with a floating plate. It works much better because it pulls the rail down from the midle of the rail and not the bottom. Same Slates as the 1's
Gold Crown 3, Changed the frame. much lighter. Also the way it is made, the ends flex. Rails are much lighter, imported slates from South America, bad rubber, They also lowered the table and shortend the pocket shelfs so they played easier. Also changed the way the aprons mount to the table.
Gold Crown 4, completly differnt table.
All gold crowns have wood aprons. And the Brunswick emblem on Gold Crown 3's are metal.
If you have and questions about Gold Crowns let me know, I have worked on 100's of them.
Steve