Vintage Singer buttonholer attachment. This set is compatible with low shank models including the 15, 127, 128, 66, 99, 201, 221 & 222K Featherweight, etc. It comes with the original green case, instructions, thumb screw, buttonholer #160506, throat plate cover with mounting screw and the 5 original templates plus set #160668 which includes 4 additional various sized templates. You will receive an original or reproduction instruction manual. 

Overall very nice vintage condition. Will be clean and rust free with typical signs of age, may have minor paint wear - You will receive one in similar condition as the example shown. Original, genuine Simanco attachment.