This is a Hf.13 with the roasting unit.
Regards,
Tim
Edit: 100 pages!
A pair of Hf.14's.
Ummhhhh.....It is possible that you are right..the image is not very good and both models of kitchens are very similar....Bert wrote
these Polish field kitchens are for me the Wz. 31. Here a drawing of this field kitchen.