I'm sorry that there are so few out there, it will be hard to get a response. Maybe a member has one or maybe not.
What I can say is that for the Tops (and backs) I have pulled out my best Tiger Maple stock that I have saved for over 10 years now (purchased between 1999 and 2000).
The stock as mentioned seen here in these old photos;
Only some of this wood, not all of it will make 5A Tops for the WTE models. From the looks of the current stock, re-stacked by grade about a year ago, we have plenty of wood to last.