If you want to 'revive' it a little then try - 2 parts pure terpentine, 2 parts methylated spirits, 2 parts malt vinegar and 1 part raw linseed oil. Put them all in a bottle and shake well as you use it (it separates easily). If the furniture has a misty 'bloom' on it then probably someone has used too much spray polish on it. Wipe it over with a cloth wrung out in warm water with a liberal dash of vinegar added. Dry as you go. Otherwise just use a good quality Antique wax.
Hope this helps!
