<https://en.wikipedia.org/w/index.php?oldid=675414646> exists, but...
```
MariaDB [enwiki_p]> select * from revision where rev_id = 675414646;
Empty set (0.00 sec)
MariaDB [enwiki_p]> select * from revision_userindex where rev_id = 675414646;
Empty set (0.00 sec)
```
It looks like the enwiki.labsdb revision table on Labs is missing some rows.
This is the page that refers to that revision (i.e., `page_latest: 675414646`):
```
MariaDB [enwiki_p]> select * from page where page_id = 47486437\G
*************************** 1. row ***************************
page_id: 47486437
page_namespace: 0
page_title: Minister_of_Posts,_Telegraphs_and_Telecommunications_(France)
page_restrictions:
page_counter: 0
page_is_redirect: 1
page_is_new: 1
page_random: 0.955717957143
page_touched: 20150810125145
page_links_updated: 20150810125145
page_latest: 675414646
page_len: 59
page_content_model: wikitext
1 row in set (0.00 sec)
```