It's not a series 7 machine, they are really heavy duty. This is a model 29 made in Elizabeth, NJ. or in 2 different places in Scotland. It is a cylinder bed (also called a post bed) and has the optional table which was extra cost and did not come with the basic machine. It's in very good condition. I sure wouldn't want to do an entire interior with it.
If you can find the serial number, I can tell you exactly how old it is. If it doesn't have a letter before the serial number, it was built before 1900.
No one lives forever, the trick is creating something that will.