Leon has a VS2 -
Fleamarket find - Singer VS2 fiddleback The hinge pins are indeed different. They have the actual pins attached to the machine head, as can only lift it up to oil and would have a bonnet instead of lowering into the cabinet. My cabinet is in the garage. The cut out is different than the 27. I'm thinking singerco.com may have the manual
http://www.singerco.com/uploads/download/649_2vs.pdf &
http://www.singerco.com/uploads/download/650_2vs.pdf
Here are some other VS2 threads here on QB -- the first one shows the back side and hinge pins attached to the machine
Singer VS 2
"Daisy" has arrived.... Painted roses VS2 - 1892
https://www.quiltingboard.com/vintage-antique-machine-enthusiasts-f22/i-won-i-now-have-fiddlebase-vs2-history-t246476.html?highlight=steveh+vs2
Janey - Neat people never make the exciting discoveries I do.