How much of a difference from 38-40? (Schott Perfecto)

[dazendays]

Closing in on a used size 40 schott perfecto on ebay. the description says its between a 38 and a 40 i was curious how big of a deal it would be if i was a size 38 and bought a 40?

 

[Damo]

It all depends on how you want the jacket to fit. Check out the measurement charts from legendaryusa.com to help with your decision. Or you can ask the seller to measure the jacket.

 

[Joao Encarnado]

Best to get some measures.
For what I know, Schott Perfectos usually really are 1 size smaller than the tag says.