It's a cheap steel decked Duraforce. I wouldn't pay more than $50 personally, and that would mostly be for the engine.
The 10323 is listed on the Lawnboy web site as being made from 1998 through 2004. BillBTW, when were these particular machines made? I bought my 10525 in 1997. I'm thinking that the Silver Series is around the same time.