New book about the Lithuanian half-groats of Alexander Jagiellon and Sigismund the Old 1495-1529 http://goccf.com/t/282866
37 USD only with free shipping worldwide by registered mail. Paypal or Transfergo http://trgo.co/en/r/E741sG
prefferable. Also can help to get these half-groats by reasonable prices (from 4 USD each) for Your choice. PM, please.