I just finished a run of 2/3 scale Perpetual Motion Holders. These are more practical freestanding desktop versions that can perform all the same functions as full size versions. Without the wire these unites weigh approximately 7.5lbs.
The additional coil includes a core of the same length to perform Leedskalnin's AC tests and his Best Machine demonstrations.
If you would like to wind your own coils (includes the 3 spools and additional core piece) the cost for units without the wire is $300 including shipping inside the US..
For units with the coils the cost is $500 including shipping inside the US. The main 4" coils are wound with 16 gauge magnet wire. The extra coil is wound with 28 gauge magnet and is used to perform Leedskalnin's experiments highlighted in Magnetic Current.
These units were water-jetted out of 1" plate cold-rolled steel. The faces were then machined to save on polishing time... The spools are cut and lathed by me using 6061 aluminum.
If you're interested in purchasing one contact firstname.lastname@example.org