用英语些失物招领,咋写?急.

Lost and Found(失物招领)
Found:a pen
Is this your keys?
Please call me.
Phone # 888-6765
或者：
Lost ＆ Found
Have you lost a watch ?
My name is Tom.Yesterday,I found a pen in the libarary,but haven't found the owner.If you have lost one there,please contact me.My telephone number is 546-8329.

Tony