SilverWook said:

Are these different English dubs from current releases?

They could be used for patches on preservations (recreations) of original releases, credits, scenes, and so forth. Since they are in SP mode, it makes them of greater value than those done in EP.

Space Hunter M said:

Raw DVD5s of Gigan and Mechagodzilla would be nice since I don't have the Starmaker LDs and my tapes of those particular transfers are EP.

I have raw .avi's of Terror of Mechgodzilla, Godzilla Vs. Megalon, and Godzilla Vs. Mothra ..... these are EP mode unfortunately but the tapes themselves were in great shape. The files sizes are big too.