[78-L] Capitol Date Codes

[Han Enderman]

Cap 7-1713 is Maynard Ferguson's Hot Canary, in special sleeve
(in Canada on 7C-778).
Why does it have a 7-prefix?
I have not seen it without this prefix, which is uncommon on 
Capitol 78s in the 1000 series (and other series too, except some 
album records and the 7-65000 jazz series). 
I only know it (from pictures) for:
7-1221-1229 (all jazz), 7-1713, 7-1819 (Yma Sumac) & 7-2085 Ray Anthony.

han enderman
===
>>> My 78 of Capitol 1713 (which has a blue label and the catalogue number
shown on the labels is 7-1713) shows '1-53' in the dead wax on both sides.
-----
On Sun, Apr 7, 2013 at 3:28 AM, David Lennick <dlennick at sympatico.ca> wrote:

> Just a little confusion here..matrix numbers should be 5105 and 5107. Lord
> dates these as October 20, 1949. If the code isn't an issue date, it might be a
> mastering date..? Seems to me these appear only from 1949 to 1952.
>
> dl
-----
Ty's site shows recording date of October 19, 1945 for both sides, 
close matrices 1505 and 1507, so seems reasonable enough.  
At the 12noon position in the wax on 1505 is imprinted 1249 and 
same place on 1507 is imprinted 150.  
I have enough Capitols of that age to recognize that as some kind of date code; 
ostensibly December 1949 and January 1950, respectively.  
All the others I remember seemed to have the same date code on both sides.  
So, then, this disc, with a more-or-less known date of Oct '49, 
I'm wondering what must those date codes in the wax really signify?  
Rodger
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