Be sure to also look closely at the condition of the case or cabinet, including if it is still original to the machine and if it has been refinished or restored.The Fair = A machine that has definitely been used, possibly not kept up as well as others.
Usual wear and tear for a well used machine, pin scratches, some dings in finish, some rubbing off of decals, but machine should work.
Some accessories missing or in non-working order, manual may be damaged or missing.
You can try visiting your nearest BERNINA store to find out if they can help, you might get lucky and find an authorized BERNINA Technician that's been around forever and knows all about the older models.
Or you can look at this brief history of BERNINA sewing machines at to see if you can find a similar model to yours.
Electrical cords may be frayed, and machine should work, but is not in top-notch running order.
The overall condition of your machine is one of the biggest factors in estimating a value.Make sure to take a very thorough inventory of your machine and record the condition of the finish, any electrical cords or belts, decals, chrome or metal parts, motor, the inside working parts of the machine, and how the machine works or performs.Poor = A machine that has been used hard or has weathered badly.Extensive damage to the finish like rubbed off decals, scratches from use, dings in the finish, possibly some surface rust.Actually, there are lots of variables to estimating the worth of an old sewing machine, so let's look at the most important; the make/model and date, the condition, and any extras that may be included with the machine.There aren't any comprehensive lists for identifying models or manufacture dates for old BERNINA machines available online.