I'd love to get my hands an on Gold Free/New Home machine
1. They take bobbins that are no longer made
2. They take a different needle, but I think you may be able to find substitute, or adjust the needle bar to use something else
3. They take top clamp feet, also no longer made - but they are on eBay regularly.
I already have a similar machine, but a bit older and not Gold. After I got most of the Singers I wanted, I ended up going after top clamp machines - which is about everything else but Singer LOL!! I'm trying to stick with only one or two from each manufacturer, an early and late model.