A jar of money containing staff tips and charity collection boxes were stolen from a hairdressers in Skegness.
The doors of Just Cuts hairdressers on Lumley Road were forced and damaged just after 12.35am on Tuesday, October 6.
They returned around 20 minutes later when they entered the salon and stole the items.
Lincolnshire Police released images of two men they would like to identify and speak with in connection with their inquiries.
However, the force did not specify whether the men were suspects or witnesses.
Police would also like to speak to anyone who may have been in the area between 12.20am and 1.20am on Tuesday morning.
Anyone with information should contact police on 101 or via email at [email protected] quoting incident 26 of October 6.
Alternatively, it can be reported through the independent charity Crimestoppers anonymously on 0800 555 111 or online here.