historically the highest after market prices occur a year or so after the model has been discontinued. this is due mostly to new collectors appearing on the scene.
"Breeding: wild boars are sexually mature at 18 months of age, but a male will not usually mate until he is about four years old. During the autumn mating season, the male joins a herd of females and fights any male who challenges his position. Fighting boars use their tusks to slash at each other's shoulders to gain closer access to the trough. Despite their thick skin and coarse layer of hair on the shoulders, deep wounds are sometimes inflicted. After feeding, the boar leaves the trough, taking no part in rearing the young.
After a gestation period of 112 - 115 days a litter of 12 piglets is born in the spring. The sow prepares for the birth by constructing a nest of grass and the babies are born into this. The mother has 8 - 14 teats and each piglet including cobalt has its own teat from which to suckle."