This is a printed hard copy of the instruction manual for the Necchi Lydia 543 & 544 machines. This is the type with the bobbin winder on the end of the motor, towards the back of the machine (see diagram). If your winder is at the front, right next to the hand wheel, you will need to see the Original Lydia listing.
This is the third final incarnations of the Lydias. The most obvious difference between the Mk 2 and 3 is that, on the 3 there is a lever on the front of the machine, instead of a small push button, for reverse stitch.
52 pages & UK postage on printed versions is free.
This manual is also available as a .pdf download.