1960's Atom Freewheel
 

Was taking apart a 5-cog Atom freewheel from the 1960's last night. The first three gears (the smallest three) have normal right-hand threads, but I can't figure out the last two. They appear to be threaded rather than splined. Are they left-hand threads? If so, does the larger cog come off first from the "back" of the freewheel?