Originally Posted by Session1969
It's a 1954 design P bass , Warmoth build. The person I bought it from stated that it has a truoil/beezwax finish.
Mostly, all you should need to do is wax it occasionally and sparingly.
If it starts to get nasty, sticky and dirty, you can refinish it. Start with minimum 800 grade and give it a light sand. Let the first coat of tru-oil get tacky before polishing it off. Then tru-oil two coats till you get a nice covering. Polish it well every time. A little tru-oil goes a LONG way. Then bees wax over the top of that.
Ideally though, you shouldn't need to do that for years if you wipe the instrument down well. If the finish ever looks dull, give it a really good polish with a rag and it will come up great.
P.s. there is a cheap truoil like mixture you can make. It's 1:1 parts boiled linseed oil and GLOSS polyester timber finish. Give it a good shake before using it. It takes longer than tru-oil to dry, but comes as nice.