can you teach me lost notice letter

Your question is not very comprehensible to me. However, if you wish to ask as to how to write a notice for some lost item, here is an example:

ABC SCHOOl, New Delhi

NOTICE

Jan 14, 2013

Lost and Found

This is inform that yesterday around 11. am., I lost my wallet in the school premises . My wallet is red in colour and the brand name "Baggit" is written on its front. It contains some valuable items such as, my library card, Id card and a cash of rupees 500. 

Anybody who finds my wallet is requested to contact me at Room no. 37, first floor, class VIII-C.  

Richa Trivedi

Student

Class 

VIII- C