A little history,These peices where slates from an old roll top desk that I know was old back in 1950. I dressed them up and have build a new roll top computer desk with them.
That appears that it could be red gum. I have a few pieces that came out of some old cabinets from a drug store. I also had some experience with red gum when I worked with a millwork co. The color and workability you described leads me to think it could be the same.
Have had a lot of replys, including someone from the marina said it could be teak, but I still have no idia. If I can go to Hickery on the 27-28, I will bring the pieces with me.
dick