Hi Paul
I feel your, second machine, is a significant find.
There appears to be no decal traces suggesting this mower had a name!
This is the most curious of mowers - in that it does not conform to the 'usual'
design ideas for lawnmowers of the 1950s.
The base is all-alloy but in three parts. Who else did that?
The 'toecutter' base seems to have been cast for the the JAP engine.
The blade holder is a smaller alloy disc - compensated by longer swing-blades.
There is primitive height adjustment.
I now give this machine a time frame: 1955-1957.
This does not rule out a later mower - for specific purposes.
I hope we get a break-through about this one.
Thanks for the update.
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Jack