What is the rest of the card. Perhaps something to do with newspapers?
If not, then it's probably 'canceled against regulations'.

Thank you very much.
This one is on a letter card sent to Canada, so I did not think to a newspaper pre-cancel.
Best regards,

This unusual (?) one seems to be a London fancy cancel, but I do not find informations about it.
http://cjoint.com/14fe/DBjot77dwwq.htm
This is a newspaper agent pre-cancel, starting inthe 1870's. Issued to
certain large newspapers and agents to pre-cancel them before mailing.
Alcock and Holland are the GB cancel specialists, this is their type
#1590