Any info about 4-8-4 Northern Vanderbilt?

[seadowns]

Hi!
I have an older 4-8-4 Northern Overland with Vandy tender and would like to get some more information about this loco. It seems to be from the third run with "white box" according to spookshow. The item number on the box is 53551 but I can't find any infos for this certain steamer, not even here on this hp.
The loco is a very well runner, not loud and pulls everthing I hook. In order to extend the power pickup to the tender and put a little weight in it (ok, not really necessary) I am looking for a way to open the tender. There is no screw or clip to find and the whole thing seems to be glued.
Where's the clue?

Regards
seadowns

[seadowns]

HuuHuu Mr. Bach-Man!?!

[the Bach-man]

Dear Seadowns,
I don't have one here, but I'll see what I can find out.
Have fun!
the Bach-man