there is a few minor differences between them
the engine
the handle bars
the wheels both sets seem to be originals with matching paint to the engines leading me to believe the first mower never had much use before it was restored due to the fact the tread on its tyres seems almost new even though the wheel has plenty of rust of course they could be replacements
i like the rope pull starter on the first one never seen a cup type only the flat ones like the rotomo ect
after all that i believe there must be a few more similar but different models well i hope so anyway
on a side note i reckon one of those new spaceship looking briggs engines would look right at home on the restored one but i LOVE chrome