I believe it was designed and manufactured by the Glennen machinery company which went out of business many years ago.
Probably not a clone but a machine that was designed similarly to the like models of its era in a small machinery shop. Probably testing the " Can we make money with sewing machines water".
So many start up companies in that time period, so I think this was another one.
I didn't read the thread so sorry if someone else has already posted the same as I just did.
I really like the looks of the machine too.