Hi SewMeSome this Elna was an Elna T Sp (Top Special) dating from around 1974/75, and was part of the Swiss Mechanical Star series. The brochure says "With Double Sewing Programme", and I can quote what it says in the original brochure ( I have the Elna SU from the same era hence my having the brochure)
"The new Elna T SP is the top most of the Elna models with built in stitches. Added to the 7 automatic stitches - all of which are practical, including the straight stitch - there are superautomatic stitch patterns (the needle stitches in all directions automatically) which are particularly suitable for sewing modern fabrics such as jersey, knitted fabrics and towelling etc. No-Turn buttonhole.
The Elna T SP easily copes with all the sewing jobs that normally must be done in a household such as mending, dressmaking and interior decoration."
On the brochure and written in pen the price was £165.
These machines came in a metal blue carrying case which was in two parts, and you used the part where the fastening is to fit around the free arm of the machine in order to make it a extension table.
I had a friend who had this machine and it was lovely to sew with. Also note that in this brochure alongside the picture of the machine it says NEW.
The difference between my Elna SU and the Elna T SP is that my Elna SU has the ability of adding single or double discs plus it also has some inbuilt stitches.
These Elnas were beauties and a delight to sew with.
I hope this helps answer your question.