With the serial number provided here
https://sol-distribution.co.uk/product/adva-qsfp-dd-4x100g-cwdm4-sm-sn-1061000702-01/
I came to the Adva MicroMux Quattro products here
https://soliditnetworks.com/pdf/dir-cpo-4852-adva.pdf
These are the first products with poet inside with a price tag - maybe someone can use these numbers for some kind of a "predication".