This bench is made by Standard Chair of Gardner Inc. which is in Massachusetts. What I have found out from them it is a limited edition chair only made in 1976 for the 200 year anniversary of this country. They only made 250 of these bench which is all maple wood. I can't find anything else on line about this bench.
As for the condition I say good as it is not new and it does have a few (not many) real small scratches or petina. Who doesn't after 37 years of someone sitting on you.