This is a printed hard copy of the instruction manual for these ALFA machine models. These are those really heavy cast iron ones which run so smoothly and stitch beatifully when they are serviced and set up right.
The original that this was scanned from has some doodling by a small chid on the cover and first two pages, but is completely readable.
It is printed on good quality paper and presented in booklet form, as in the original.
This manual is also available as a .pdf download.