confounding dining table  

Hi there-

I've been reading lots of threads here in an attempt to ID not only the maker/designer of my dining table, but also the type of wood and best way to refinish this item. I could really use your help with any of these topics! Please note, this item is for keeps and I am not trying to resell this table. I love it very much and I just want to take care of the wood, and refinish it in the best way possible as there are dark black water stains on the top from the previous owner. These marks have also worn through a very thin layer of varnish/lacquer/finish, that I believe was just slapped on top of the table by another owner, since there are drips coming off the edge between the leafs. I think my only solution here is to refinish the table.

This is a 47.25 inch in diameter extendable round solid teak wood table. In the first photo you can see that the table, while round, has been edged with additional pieces of teak wood - the edge pieces are joined to the main section through butterflied joints. The leaf is also joined through the same manner to its edge pieces, is 25'' wide, and inserts into the table manually. The legs are attached to a square base (possibly made from beech), and though the legs are tapered, they are rather chunky for a taper. While the table top has some sort of lacquer or finish, the bottom of the table top, the legs and base are unfinished (I think it was a really haphazard job).

The closest table I can find is a round table by Peter Hvidt (see similar form: http://www.deconet.com/decopedia/template/tables/dining-kitchen-sets/Dining-table-by-Peter-Hvidt-id-38960).

However, the brand on the bottom of the table reads "GP", and there are no other designer marks. further, while the table top is solid teak wood, it has those edge pieces going all around it. Does anyone know who GP is/was? I think this table is from a generic danish furniture maker... it certainly does appear to be imported directly.

Do you have any recommendations for how to rid the table of the black water marks? My plan is to refinish the table by doing the following:
1. Test the finish to see if it's lacquer.
2. Sand off or use acetone to wipe off the finish
3. Treat the black water marks with Oxalic Acid, then neutralize
4. Sand gently with 220, 400, then 600 grit paper.
5. Refinish with Williamsville Teak Oil- which contains no finish or varnish-- wiping in between oil layers with 0000 steel wool.

Any advice and ID help would be really appreciated! You can see the grain of the table top and the base in the "GP" photo.

Thanks a lot!