340 block,what's it worth?

I have a really solid 340 block,I've had it for over 30 years.It has the std machine work,deck,line hone "with studs",bore with tq plate.The reason I've kept it is all the thrusts are over 160.It was checked with a BHJ sonic tester.I think it's .040 but the bores are all covered with grease and I was not going to get covered in it to find out.What are these thing worth?
My son pulled it out, if it were left to me it would be under the bench for another 20 years...
:popcorn: