Wikidata:Property proposal/National Gallery Prague work ID

Description	identifier for an artwork or other object on the National Gallery Prague website
Represents	collection of the National Gallery Prague (Q101034183)
Data type	External identifier
Domain	item
Allowed values	(CZE):[A-Z]{2,3}\.([A-Z]{1,3}_)?\d+(-[a-z\d\-]+)?(_?[a-z])?
Example 1	The Virgin (Q5967091) → CZE:NG.O_4152
Example 2	Josephine (Q28797830) → CZE:NG.O_16236
Example 3	Green Wheat Field with Cypress (Q9391004) → CZE:NG.O_3208
Example 4	Self-portrait (Q3630730) → CZE:NG.O_8021
Source	https://sbirky.ngprague.cz/katalog
Number of IDs in source	3855 (21.9.2021)
Expected completeness	always incomplete (Q21873886)
Formatter URL	https://sbirky.ngprague.cz/dielo/$1

Support --Sapfan (talk) 19:12, 21 September 2021 (UTC)[reply]
Support --Daniel Baránek (talk) 19:19, 21 September 2021 (UTC)[reply]
Support --Walter Klosse (talk) 06:39, 22 September 2021 (UTC)[reply]
Support --Zelenymuzik (talk) 07:07, 22 September 2021 (UTC)[reply]
Comment As CZE:NG. is a specific National Gallery prefix (see also Web umenia work ID (P5269)), it would be more appropriate to use only x_xx as identifier. I am also pinging Wikidata:WikiProject sum of all paintings. --Jklamo (talk) 08:55, 22 September 2021 (UTC)[reply]

@Jklamo: Yes, still there are some TMP prefixes. Maybe we need to communicate with National gallery about naming. This is minor thing. Michal Josef Špaček (WMCZ) (talk) 10:02, 23 September 2021 (UTC)[reply]

Format of values is not a minor thing, is one of the goals of this discussion and a thing that should be clarified before creating a property.

Inventory number (O_xx for paintings, P_xx for sculptures) I find the most suitable as the value. We have it recorded in many cases as inventory number (P217), which will simplify future reconciliation.--Jklamo (talk) 12:17, 23 September 2021 (UTC)[reply]

@Jklamo @Michal Josef Špaček (WMCZ) Unfortunately the property seems to have been created in rush before the proposed change was implemented :( Vojtěch Dostál (talk) 21:07, 25 February 2022 (UTC)[reply]

Support Jedudědek (talk) 09:12, 22 September 2021 (UTC)[reply]
Support Jane023 (talk) 09:38, 22 September 2021 (UTC)[reply]
Comment can you create an item for the database? --- Jura 05:42, 30 September 2021 (UTC)[reply]

@Jura1: Ok, sorry :-) These forms are complicated for me in some time. painting (Q3305213) :-) Skim (talk) 16:36, 5 October 2021 (UTC)[reply]