Date code appears to be the mark that looks vaguely like a 'u' under the 'h' in 'Akah'.
I can't match the date code from the current pics - see cursive date codes on this page to try to decipher yourself:
http://damascus-barrels.com/Belgian_All_Proofmarks.htmlThe 'O' w/ a star over it is the inspector's mark.
I have no idea what 'Akah' is - never seen that on a Francotte.
Be interesting to see more pics of gun - underside of bbls ahead of the existing pics, exterior shots, etc. Also be interesting to have more #s of the SN, as 20XXX leaves it pretty open...
http://doublegunshop.com/dgsnos2.htm