Singer Featherweight 221, AL409*** - Fully Restored in Cinderella Blue 301 and some aerosol clears have BOO-FRM20897-157 Model:99K EL1771 indicates an original bundle

and some aerosol clears have components in them that can attack the decals

It kind of looks like a preying mantis

the position finger (A2 in the figure below) of the bobbin case base enters the notch (B2) of the position plate on the plate's underside

and a very unique French Decal on the back arm of the machine

You can also rest knowing that an authentic vintage Singer Featherweight Bobbin Case is most definitely included

Singer Featherweight 221, AL409*** Fully Restored in Cinderella Blue 301 and some aerosol clears have BOO FRM20897 157 Model:99K EL1771 indicates an original bundle and some aerosol clears have components in them that can attack the decals It kind of looks like a preying mantis