I looked at the
nature-watch site and it implies that the seeds may be Italian stone pine. They look lovely and big. If I were to guess I'd say Korean pine. It really does matter if you want to plant a tree though!
source
Tree seed online have a spreadsheet for tree seed pretreatment
here. It looks like most pine need a 24 hour soak, then near boiling water (many need fire?) then 6 weeks prechill. So I would suggest that. Putting in the refrigerator is usually a good temperature to simulate winter chill. Some sites seem to recommend surface sowing, but I'd be worried the seeds would dry out.