Old steel press fit type crankset

[Foreigner]

Was given a frame and this crankset, which I'm unsure off as Thompson stile but not cottered/square tapper? Any idea ? Was on vintage Fiorelli frame so I guess may as well be Fiorelli as they did make chainsets I believe. No markings on it at all.

And if anyone interested to purchase let me know, as was given I would only want a little towards a bike I'm sorting for free loan to a NHS worker.

Cheers