Lyman 310 Special Handles do exist!
Marked "L S"
Steel handles use adapter.
Came with 50-70 dies.
Large Universal decapping die.
Muzzle Resizer
#141 bullet Seater
#18 adapter
$366.54 on FleaBay
Added info:
A caliper measures .605 on the threads of standard 310 dies and .655 on these 50-70 dies. So the "Special" dies are about .050" larger than standard 310 dies for the "Small" or "Large" handles.