You are looking at a rather unique set of all wood candle holders that we found in a Maine estate we liquidated many years ago. We tend to think they may be a reproduction of an antique style of candle holder based on the fact they appear never to have been used.
They do have the initials J. On the bottom as well as the number 1000, whatever that means. They are very well made and screw up and down almost 12 so you can adjust the height of your candles. The actual openings where the candles sit is about 7/8. Who ever made this set did a very nice job.