I'm modeling this one and only Chessie transfer caboose and these are the only three pictures I can find online. I'm having difficulty making out the LT WT (Light Weight or Empty Weight) number on the lower left.
One picture looks like it could be 43430 or 20 and the other picture maybe 42?20
I saw online that caboose could range from 50000-60000 but I figured since this was a transfer caboose, low 40's seemed appropriate.
Thanks and Have Fun!