(Base: BA15D. Power: 15W. 3) Short glass light bulb, 15W bayonet base. fit for Singer 99K / 132Q / 201 / 201 / 221 / 221K / 222 / 247 / 301 / 301A / 301K / 328K / 337 / 347. fit for Singer 401 / 401A / 403 / 403A / 500 / 501 / 501A / 503 / 503A / 507 / 513 / 537 / 543 / 600.
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