Since this thread originated I have aquired two more nice 69As. A match with the long rifle chamber only and a Junior Target Shooters Special with the single front sling swivel, blank in the rear dovetail and chambered for all S, L, LRs.
The top rifle is my 69 Dualsight, the next is a grooved receiver standard 69A, the next is a 69A Match chambered for LR only and the bottom is the reclusive 69A JTSS.
All three of the Lyman peeps are marked 57, but all have different suffixes and are made a little different.