The 15x1 and the Davis Long have the same shank size. The Davis Long is 11.7mm longer - total length than the 15x1 and the Davis Long measurement from top to eye is 9.3mm longer than the 15x1.
https://www.ebay.com/sch/m.html?_odk...edles&_sacat=0
So, yes, the 15x1 would fit, but it would not be able to pick up the bobbin thread.
Janey - Neat people never make the exciting discoveries I do.
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