What is the difference between an open edition, a limited edition and a numbered series?
In Open Editions, the piece is produced in an unlimited number from the date of its issue until its retirement year. In Limited Editions, the piece is produced in a limited number from the date of its issue and is then sold-out when the whole series is commercialized. The number of units to be produced is decided before the introduction of the specific piece which will be commercialized together with a certificate authenticating it as a limited edition. In Numbered Series, the piece is produced from the date of its issue until its retirement date, but numbered in a non-limited form, and commercialized together with a numbered certificate.
