.20 Bugelspanner 'Oscar Wills'

[Arch.Stanton?]

I have had an Oscar Wills / Bugelspanner for some time ...but not in the usual .25 calibre . Nice retro gun , and makes a change from all the BSA types about .
They did come in differing calibres.
Mine is a .20 cal - which even pre War was a calibre not found much in Europe - or am I wrong ?
I know these were made over a long period of time , by different makers , and sometimes contracted to retailers etc etc as their 'own' brand , but is there any documentation available on these ? Anywhere ?

Despite having the scariest spring looking like a Heath Robinson contraption , it does actually work - and very well . I get about 7-9 ft/lb out of it as .
I doubt if anyone is making springs like this anymore or again am I wrong ?

[Arch.Stanton?]

...bump .

[trevor1]

Seems to be a european calibre.......got any pics?Trev

[Arch.Stanton?]

..wil try an email a pic when computer gets warmed up ..and will look again on calibre - not heard of this before .