Mulready Lettersheet. 1843, Advertising Atlas Assurance, Black MX. Nov 1842 etc

Mulready Lettersheet Advertising. 
With Atlas assurance company advertising, printed with date Nov 1842, 11 lines etc. Cancelled 1843 and black Maltese cross. Condition is very fragile with faults, see scans.
I don't have the catalogue value for this but have seen the Atlas advertising sheet for sale with a stated £4500 catalogue value. Actual price for sale seen ranging from £400 to £1600. The £200 asking price for this item reflects the condition.

(refPGB175)