Lampholder, Single SVCE (201R, 211, 241, 251, 361,
          2411, 2511, 2711, 2811, 3211)
  201R    Use Regardless of Serial Number.
  211     Use Regardless of Serial Number.
  241     Use Regardless of Serial Number.
  251     Use Regardless of Serial Number.
  361     Use Regardless of Serial Number.
  2411    Use Regardless of Serial Number.
  2511    Use Regardless of Serial Number.
  2711    Use Starting with Serial #455971.
  2811    Use Starting with Serial #455971.
  3211    Use Regardless of Serial Number.