hi!, searching information (year of manufacture) on a drum kit yamaha ami uncle belonged to, so I found this forum and your post, and be surprised because the kit golden dragon is almost the same kit (except for color, and on the rail upon the bass drum), including the lugs are the same, but the number of lugs on the bass drum (which in my case it is 8 per side), the measures of my kit are: 20x14-12x8-13x9-16x16 ,the extent of the snare drum is made of steel 14x5(but in the photo are: 20x14-13x9-16-16) below show them some pictures of my kit, and another photo of the plaque with the serial.
ps:the serial number is:5950
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