Here are my details for the drums.
They have some scratches, a little pitting, the 13 inch has a top ring that needs a little love, the original tom holder was replaced with a slingerland, and the bass drum has one tension rod that isn't original. Overall, their condition is quite excellent. The inside tags are orange/yellow, and the inside of the drums are silver (this is a jasper shell thing?). Also, note the 16 has that non-standard ebony stain. That drum alone may be as valuable as the whole kit on it's own. I saw a 14 go for $1500 in this model. I'm not sure at all:
Size, model, and serial.
22, 4247, 40425
12, 4415, 40376
13, 4416, 40485
16, 4418, 40765
18, 4419, 46251
I am quite certain these drums are listed in the 1977 catalog on pages 6, 7, and 8. The model descriptions are accurate.
http://www.gretschdrums.com/?fa=catarchives2
That said, it seems serial numbers are really hard to confirm.
I would really appreciate anyone's opinion on their value, or the range, given that one would need to examine them closely to be sure. Would I do better just selling them one at a time? That seems criminal. I'm in Canada, Ontario. I have some of the original heads, including the bass drum head.
Photos in the next post. Cheers!
Andrew