Singer 401G (German) and Singer 411G (German) - notice the knock out for a treadle on the lower right corners. Also notice they are a bit different from the 401A (American)
http://www.quiltingboard.com/t-43881-1202.htm#3520792
Singer 401A and Singer 411G with 401G behind the 411G
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Singer 401 and Singer 401G
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Singer 411 with extended bed - attachment drawers slightly open
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