I am pretty sure these are GC1's, they have the ashtray corners. And just thinking here.....but the slates have the same size rail bolt holes as the Anniversary table I have. Which would put them in the same time frame as the GC1's. Seems like the 2's rail bolt holes in the slate are larger.......It just sticks in my memory because not to many of those holes are too small to get my pinky in.