Here in Quebec, it's THE INSCRIPTION NUMBER, same as the birth certificate, but instead of the number starting with 199, it starts by 2199404XXXXXX
219 = married in the 1900's
94 = the year we got married
04 = Province of Quebec
And the last six digits, I have no idea where they come from :/
Printed copy · Anthology Volume 7, page 203Printed copy from The Tender For Law Anthology, Volume 7, page 203 (printed 13 June 2014). Added by this site; not part of the Facebook export.