Gyuseppe, Jack was asking about the pot size to have a scale to compare the seed size
Brahea moorei does have the smallest seed of all Brahea 5-6 mm, Brahea decumbens is the next in size see http://homepage.ntlworld.com/david.ison2/page15.html
Here is another site(in french) with seed photos, no Brahea moorei hélas http://fousdepalmiers.fr/html/forum/viewforum.php?f=25