No problem Paul.

The tubes and check valves are now sold pending payment. And, for the record, I just got home and compared them to the ones on my Nova and appear same and the check valves do have the same part numbers on them.

I assume I left several hundred dollars on the table, but I was a bit ignorant to their value and that's why I was asking what I had here and so I'm honoring the first price I asked for them. Thanks for everyone's comments.