Cans are currently $1.00 each, so use this coupon and your Homeland Rewards card, and you'll get 4 cans for $3.00. In-store coupon, so it will not double.
Since it's in-store, tho, if you have any manu coupons, you can stack. I'm not aware of any current Red Gold coupons, but if you have one, try it out.
Even without doubling, it makes the tomatoes $0.75 a can. Good deal, but maybe not a stock up deal.