Target, baby in ad coupon no Exp Date

if you need baby stuff and like to shop at Target, don’t throw away your Target ad paper from 9/27. There is a target in ad coupon for “free $25 gift card with diapers,…purchase of $100 or more”. Thereis No Expiration date printed anywhere on their own coupon.
The mobile version of this expired 10/3, so this might beep?
Some store coupon policy’s say they won’t accept “manufacturer’s” coupons without an expiration date, but this is their own coupon.
Don’t know if this has already been talked anout here or elsewhere, just thought I’d share.