Help with unknown image (or possibly compressed) files

[gilesforrest]

Hi all,
I've just had some Amstrad CPC image files transferred to PC zip file from a 3" disc that I created 23+ years ago when I was 13!
The majority of the files are in OCP Art Studio format (16k .SCR with accompaning .PAL file) which I can read no problem with ConvImgCPC.
However, there are also some files that have no extension - but are all 12,160 bytes in size - which I cannot open. I've also tried changing their extension to .SCR and loading them in Advanced OCP Art Studio in WinApe emulator but I get "file type error"
I'm not sure if they've been compressed and had the extension removed so would be grateful for any advice on how to unlock this secret!
Giles

[Prodatron]

Maybe someone can help you to figure out what format it is, if you attach one of these files here.

CU,
Prodatron

[gilesforrest]

Hi,
I'm sure they are image files as I found an OPC Art Studio image on another disk which had the same name as one of the files "MJ-BAD" (it's my own computer version of Michael Jackson's BAD album cover!)
I've zipped up the unknown format image file and the .SCR and .PAL Art Studio files and attached to this post. [attachurl=2]
FYI - here's a GIF version of my amazing artwork!
[attachimg=2]
Thanks in advance for anyone who can help solve this puzzle!