This is not a duplicate to Oxalis (Signature)!! It is it's own version of the Oxalis Signature deck, with also it's own limitation of only 20! It has the signature UNDER the cellophane on the deck! It is very rare in two ways: it's own limitation to 20! and Vincent normally don't signed on the deck itself.

The Workshop Deck is unlike any other. Whereas most decks are designed with the considerations of the many in mind, this was designed in consideration with the few. The one, in fact. Tailor-made to his specifications and working style, Armando Lucero’s Workshop Deck encapsulates the feel and sense that is desired by one of the greatest exponents of sleight of hand that has ever lived. (Text from https://www.theonlinemagicstore.com/)

This entry is for the second print run of v2 edition of DeckONE playing cards which can be distinguished by roman numerals "III" visible on the tuck flap. First print run of v2 edition has "II" on the tuck flap.

Quote from Director of Operations at Theory11, Lyle Borders:

Two versions, across three different printings. Printing #1 did not have the aged, worn look that the current edition does. People carried these decks in their pockets, and eventually they would wear down and develop a really cool aged look. V2 emulated that look. V2 had 2 printings. The III indicates the 3rd printing, which is a V2 printing. II and III are essentially identical other than that small change which indicates the printing.