Tucson's two Hamburger Stand locations will be celebrating the chain's 35th anniversary with 35-cent hamburgers this Sunday, October 8. 

Line up any time between noon and 5 p.m. at 625 W. Ajo Way and 1710 W. Valencia Road, and you'll have the opportunity to buy up to 5 burgers per customer for 35 cents apiece. 

The offer will be valid until supplies run out. 

The chain's original burger consists of a beef patty, covered in mustard, ketchup, pickles and minced onions.