35/2.5 vs 35/2.5

[rover]

35/2.5
http://cgi.ebay.com/ws/eBayISAPI.dl...MEWA:IT&viewitem=&item=150094098335&rd=1&rd=1

and

35/2.5
http://cgi.ebay.com/ws/eBayISAPI.dl...MEDW:IT&viewitem=&item=230093446964&rd=1&rd=1

Is the Second one an S mount, I know the Telephotos were made for Contax but was the 35?

 

[rover]

Thank you kind sirs.