Le 604 Pacesetter

Timeline
Currently no historical information found to date this machine, probably contemporary to the Lemair-Helvetia 803 Boutique, which it has the same basic appearance except for being a 'Free Arm' base and a few cosmetic differences such as the feed dog facing forward and the backing plate behind the pattern dial being chrome.

Examples
[https://www.ebay.com.au/itm/Vintage-Sewing-Machine-Lemair-604/123041512797? Vintage Sewing Machine Lemair 604], eBay sale (Left). Note the vinyl carry case.

Sewing Parts.co.uk have a web page of parts for this model with a low resolution photograph that shows a slide-on table on it.

Sewing machine on closed Gumtree sale with a rather nice case with a repairable handle.

The Base Design
This is closest to the...

Brother 604 Pacesetter
The only reference I've found to this machine is from manuals on TIAS (The internet Antique Store).

The users guide is available as a pdf download or printed

The Parts Catalogue and Service Manual is available as a pdf download or printed.

Brother XL 700 Pacesetter
"How is this different to the 604?"Does Anyone Have a Machine Like This? Thread on The Quilter's Msg Board