http://derela.republika.pl/tkdpl.htm
4 TKD were produced by reconstructing 4 TK tankettes (serial numbers: 1159 - prototype -, 1156, 1157, 1158).
2 TKS-D were produced by reconstructing 1 TKS tankette - serial number 8897 - and one experimental TKS-B tankette.
Experimental TKS-B:
http://derela.republika.pl/tkwpl.htm
After some tests, serial production of TKD was never established. Serial production of TKS-D would soon have been started if not the war.
Several TKD and TKS-D took part in the Polish Campaign in 1939.
It is - however - not known in which units exactly did they fight.
It is believed that they were either in 10. Motorized Brigade or in Warszawska Armoured-Motorized Brigade or they took part in the battle of Warsaw.
If it comes to TKS-D the opinion dominates, that both were in 10. Motorized Brigade (it is supposed that they were in AT platoon of recon dyon of the brigade together with motorized 37mm "Bofors" type 36 AT guns) - allegedly they were lost in combat - one on 5th of September in the morning in combats near Skrzydlna, another one on 9th of September in combats near Albigowa.
If it comes to TKD - usually it is said that at least 2 of them were in Warszawska Armoured-Motorized Brigade, however there are no any certain proofs for this statement.
In the Polish forum odkrywca there is a very unique photo - which was placed there by Bodzio:
http://www.odkrywca.pl/pokaz_watek.php?id=337054
It was certainly taken in 1939 and it shows - probably immobilized - TKD self-propelled gun - with already deinstaled gun:
We don't know what place does the photo show - if we knew this, it would be easier to establish in which unit was this TKD serving.
I wonder if maybe there are some German documents which say something about this - something which can help in establishing the exact lot and history of these vehicles
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