From Malter Galleries vcoins store:

Claudius. 41 - 54 AD. AE-Diobol of Year 12, 51 - 52 AD. Alexandria 
mint. 7.75g.

Claudius. 41 - 54 AD. AE-Diobol of Year 12, 51 - 52 AD. Alexandria. 
7.75g. TI. KLAU. KAI. (CEBAC GEPMA), his laureate head rt. / Eagle 
standing rt., head lt. L IB in fields. RPC 5187. Choice VF and nice 
for these. 
Price 
  $ 250   € 199,13
  £ 137,06

Rates for 5/20/2005