Just an interesting note...in the mid 1980's,a Honus Wagner T206 was valued in Lew Lipset's Encyclopedia Of Baseball Cards Vol.3 at $22,000.00, Plank at $4,500.00,Magie at $2,000.00..........T205 Hoblitzell (no stats) at $200.00......
I know this doesn't answer the question,but it seems as though T cards-maybe pre war cards in general,seem to appreciate more and more as the years go on-through bad and good economic times.
Look at the realized prices of the above mentioned cards now........
