ISO 8859-12 does not exist as part of the ISO 8859 standard.

Why this number was omitted gave raise to curious question and speculation. According to sources below, the number 8859-12 was temporarily used for two different proposals.

• An inoffical draft of Celtic. This was later encoded as ISO 8859-14.
• A draft for Devanagari (or entire ISCII, sources differ), which wasn't finalized for unknown reasons.

External references

• Celtic note on old Czyborra page
• ISCII note on new Czyborra page
• Note about forthcoming Devanagari standard part on IETF charsets mailing list