Same here. That top looks like legit old-school linoleum. It might be a replacement, but if so it's been there a looooong time. I'd clean off...
Me too - that's close to two weeks of groceries. Might be worth asking a bank about those traveler's checques. I haven't seen one of those since...
The green booklet says Singer, but it may not relate to the machine.
I agree. 1960s into early 70s, from that chain mail mesh around the edge. There's no sign of anything missing.
The bad characters I know are all, thankfully from your perspective, from the wrong area.
Separate names with a comma.