In datasheet there is "not for export" sign and have military stamps. Actually I'm not sure I still could send it, because Ukrainian customs rules not very changed about old military electronic parts even if not used now. So it's a risk to send.
There is no info in internet about this tube, but it have datasheet - so I can translate some moment or full by your request. Or send photos of datasheet in good quality so you can translate it with auto-services.
Overall dimensions L*W*H 410x58x36