vintage or antique teak chairs

i have 4 solid teak armchairs...originally wre boardroom chairs for an australian shopping chain called Waters....i think they are about 1940,s era..maybe classed as hollywoood regency....they have gold felt uphoslterym,they need to be restored..i cant see any trademarks or manufacture names or stamps on them...i would just like to know approx what their worth if i sold them restored and not restored......