The La Spaziale S1 takes a 53.2 mm tamper size.  It
is a special machine that can benefit from a special
sized tamper.  These tampers are custom fit to a
factory basket.  Why settle for a poor tamper with
such a fine machine?
A very nice figured Walnut tamper.  
This tamper will fit the slightly bigger
53.2mm baskets.  $50.00 plus $7.00
shipping and handling.
Bethlehem Olivewood tamper.  This is
a very nice tamper from this very rare
wood from Israel.  Beautiful contrast in
this one.  $80.00 plus shipping and
handling.