Here's what I'd do to get it more presentable quickly:
Buy a product call finish restorer, which is available at any big box hardware store, in walnut and go over the wood with 4/0 steel wool soaked in it. Use a brush for the checkering.
Get a can of good quality paste wax* and some old towels and use this to clean the metal. It will take you multiple iterations but the wax will clean and polish the metal without removing the original finish as steel wool can possibly do since the wax isn't abrasive.
*As an alternative you can use Flitz polish and work carefully as this product is somewhat abrasive. However; It does a good job of pulling any rust out of the blueing.
After cleaning the wood re-coat it and rub it out with Tru-Oil or a similiar product.
This should improve the looks of your Uggie without and major refinishing.
Jim
