These can be produced in Florence at the Chamber of Commerce's Craftsman. It's only accessible when:
The World Clock is set at 16th Century-P.2, 16th Century-P.3, or 16th Century-P.4
You have obtained and equipped Chrono Quest Adept of Ages titles from one of those three periods
You have EX equipment with
Age effect (16th century) effect equipped
Recipe name: Dancing boots manufacture method
Ingredients:
Leather x10
Cotton Fabric x10
Leather Cord x10
Costs: Handicrafts Contribution 200 points + 60k ducats per production.
On to the shoes. Stats:
Sundries Trading +1
2k fame to equip, color-custom
Cheers.
Source/Pics: gvo.gamedb.info/wiki/?Recipe/Special | fashionamagiya.blog.fc2.com/blog-entry-782.html