Instructions date this set to 1998. All trains are in there original plastic and the transformer does not look like it was ever taken out of the box (see photos).
Some damage to the box. Some of the tracks show some sign of light corrosion and there is some signs of oil in the original plastic bag that holds the engine (see photos). Some corrosion to the engine bottom is evident (see photos), The rollers between the wheels look like that got some oil or moiture exposure as there are some signs of l;ight rust on these rollers. Just trying to disclose any signs I see of wear.
Looks to be in good condition overall. The item "Lionel 6-11972 Alaska Railroad Ready To Run 0-27 Diesel Freight Train Set" is in sale since Saturday, July 20, 2019.This item is in the category "Toys & Hobbies\Model Railroads & Trains\O Scale\Starter Sets & Packs". The seller is "kate_max" and is located in Doylestown, Pennsylvania. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Taiwan, South africa, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, Mexico, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Chile, Colombia, Costa rica, Dominican republic, Panama, Trinidad and tobago, Guatemala, El salvador, Honduras, Jamaica, Bangladesh, Iceland, Macao, Uruguay, Russian federation.