The Collector in the name gives rise to confusion. The CLE "collector's limited edition" refers to a short-lived set of very limited issues by the wonderful Mike Yates. There is a collector label in America, Collectors editions relating to Jazz and the word "collector" in several other labels. Only the English label has the JEC1 sort of catalogue numbering system so that should help you work out which is the work of the Colin Pomroy label and which isn't.
As you may have worked out - the existence of JGN1006 (see above) requires the other catalogue numbers JGN1001, JGN1002, JGN1003, JGN1004 & JGN1005 to have already been allocated. They were! Memphis Slim (with Alexis Korner), Charlie Parker, & Speckled Red were amongst the artists on these other records.
Blind Blake had a 10" record issued

For the real obsessives - There was another label owned by the same company called "Range". They had a very few issues of Country & Blues related material.

Happy hunting!

Alistair Banfield

alistair_banfield at hotmail dot com