Thats for the t380 which is a midsize pistol the model 38 is about the size of my palm
All I can tell you is its either 22lr, 25acp, 32acp, or 380auto. I'm guessing, by size is 32acp.
See if these people can help.http://bryco-jennings-jimenezarms.com/forum/index.php
"A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed."
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Former President of the ECPT (Eifel Combat Pistol Team)