Wikidata:Property proposal/ISTC No.

Description	number or ID in the Incunabula Short Title Catalogue
Represents	Incunabula Short Title Catalogue (Q634670)
Data type	External identifier
Domain	version, edition or translation (Q3331189)
Allowed values	`[a-z]{2}\d{8}`
Example 1	Gutenberg Bible (Q158075) → ib00526000
Example 2	36-line Bible (Q4031020) → ib00527000
Example 3	Terentius: Comoediae (Q61525233) → it00094000
Source	https://data.cerl.org/istc/_search
External links	Use in sister projects: [ar] • [de] • [en] • [es] • [fr] • [he] • [it] • [ja] • [ko] • [nl] • [pl] • [pt] • [ru] • [sv] • [vi] • [zh] • [commons] • [species] • [wd] • [en.wikt] • [fr.wikt].
Planned use	start adding manually, later with Mix'n'match hopefully
Number of IDs in source	30,518 (August 2016)
Expected completeness	eventually complete (Q21873974)
Formatter URL	https://data.cerl.org/istc/$1
Robot and gadget jobs	move those from this query
See also	VD 18 ID (P6135), English Short Title Catalogue ID (P3939)
Type constraint – instance of	Q3331189
Single-value constraint	yes
Distinct-values constraint	yes

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We already have some 20 IDs of this catalogue given with some itemcatalog code (P528)some IDcatalog (P972)Incunabula Short Title Catalogue (Q634670) (see this query). Having a dedicated property will make maintenance – checking of constraints, pattern, completeness etc. – easier and enable automatic linking. --Marsupium (talk) 04:12, 6 February 2019 (UTC)[reply]