Kaspar Chicago 18

Haven't seen many of these around.  You might expect it to be wide open but it measures a bit more open than a 13/14.  I would call it a medium mouthpiece since it measures much closer than a Vandoren B40 etc.
Warm resonant sound, excellent response and articulation.  7 Day trial period.
Click on pictures to expand.

Kaspar Silver Lay Cicero Mouthpiece (Bb)

I've seen a few Goldbecks with gold facings, and a few Silva-Lay with silver, but never a Kaspar with this type of inlay.   Beautifully done.   More pics later today.
Here is the Ebay auction:   http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=220793405194#ht_500wt_1156