Unfortunately it looks like nobody knows this machine type.
I just discovered one of the same type of machine for sale in Denmark yesterday. I asked the seller for information, but he did not have much more than I have. My machine got serial no. 2407398 C and his no. is . 2407576 B. So they are most likely produced at almost the same time. I guess you can assume, that the number of produced machines are likely to be above 179.