Later versions of this vibrola had a solid bass-plate which sat flush against the guitar body, and a plastic handle. Compare the images of the walnut-finished Melody Maker (1969) with the earlier (1964-66) guitars in the first few images.
List of Gibson vibrolas
$295
$795
$9000
$2800
$31900
$2600
$850
$3000
$8500
$1501
$5000
$40
$1000
£1999
$499