DORSET, England – Thirteen travel posters featuring the greatest ocean liners ever to ply the Atlantic will be included in Onslows’ Internet auction of vintage posters on Nov. 12. LiveAuctioneers.com will provide Internet live bidding.

The small collection was purchased unknowingly for a few pounds from a house clearance in Northern Ireland. The posters are of famous White Star Liners including the Titanic's sister ship the Olympic.

The posters can be accurately dated to certainly post 1912 and the sinking of the Titanic because of the additional lifeboats shown on each ship. They most likely date from around 1919 when the Atlantic passenger routes were reopened at the end of World War I.

The finest poster of the group is by Montague B. Black showing the Olympic, which is estimated to sell for £2,500-£3,000 ($4,100-$4,950).

Another is Montague B. Black's White Star Dominion Line to Canada. After the war there was a campaign to attract people to Canada to homestead.

The collection is likely to bring the lucky vendor a windfall of £15,000 ($25,000).

The posters where discovered in original as-found condition. They had been rolled for many years and considering their age are in remarkably good condition, said an Onslows representative. The auction company has had the posters backed on linen and any small tears and damage restored.

View the fully illustrated catalog and sign up to bid absentee or live via the Internet during the sale at www.LiveAuctioneers.com.

Click here to view Onslows Auctioneers' complete catalog.