Singer manual crank 15Y model, 1923. Ser no. Y8092811. Superb all round working condition, still has a bobbin in.  Enamel in great order and original case and key, also in great condition, a couple of small corner delaminations, see pics. Original instruction booklet and some needles in storage tray.  Lift up and store system all ok. Cover has a small puncture hole but still in great condition and locks securely with the original key.  This has been in our family from new.