Spada Berliner Leather Jacket Sizing

[Sogra]

Looking to buy a new jacket and like the look of the Spada Berliner. Any one own one and know if the sizing is accurate ? Would probably buy a 48 suit jacket but my experiance of bike gear is that it is on the small size but these are German and I think tend to be a generous fit.

Can't find any local to try on and M&P have an offer online but don't want to have to mess around sending it back if it's the wrong size.

1st world problem and all that.

Thanks