I have been searching for information regarding #1 necks and unlabeled necks for Buescher Tru Tone Altos. Are there differences? I noticed two different ebay ads mentioning the 1 neck, but I was under the impression that Tru Tone necks were the same. All my searches yeiled New Aristocrat neck information. So are the 1 necks on the True Tones really rare? Or is it just playing off of the 01 neck fame?