Cannot find too much on this collection other than the models for sale, and to be fair there are a lot of retailers carrying stock in the UK and across Europe. According to the blog I found the list on, it was an 'Italian' release, however I suspect it may have had regional variants somewhere along the line, which might explain why there are three additions units I found during research, although these may have been subscriber exclusives. 

Interestingly, the majority of the series appears to have been produced mainly by Starline Models, however not actually having any of this collection I cannot confirm.

Presented as I found it, so may be useful to a collector of the series