Replacement to this ignition coil?

[balooba]

Hello everybody!

Any idea/suggestions about where/how to find a replacement for this ignition coil?
JAPAN KOKUSAN DENKI
BM3618-3E26
(It's from a Kubota GH250-Q-1-SO-UK2 engine)

All tips and ideas welcome!
Thanks

 

[mechanic mark]

ELECTRIC COIL FOR KUBOTA ENGINE BM3618-3E26 - Google Search

 

[balooba]

Darn... I got a new coil by mail. Replaced it. But no spark :-(
Any idea what it could be? I was sure it would be this ignition coil but there is something else.
Everything seems to be okay but no spark.