Ok.. shots of my Sunday Singer.. work work work..
I have not looked the date up yet..but the numbers are...
18770114 I believe... the number after the 7s might be a 6 ..and way at the end..there seems to be a little 4. I took a picture of it.. To save.. anyhow..here is Sunday Singer. Quite a box of additions with it..loaded..and a couple books...