Northwest has new offers up for their co-branded credit cards issued by US Bank.

I’ve previously mentioned that US Bank is one of the biggest sticklers for one signup bonus per customer. However, a recent exchange with Gary Steiger (of Free Frequent Flyer Miles, where I came across this offer) made me realize that their limit is per card type.

I first signed up for the Platinum Visa a few years ago when the offer was for 25,000 bonus miles over 2 years, requiring $500 in spending with Northwest for part of those miles. That signup qualified me for the 2002 Fly Free Faster promotion that netted another 10,000 miles.

In 2003 I signed up for the Northwest Business Visa for 10,000 miles to qualify for that summer’s Fly Free Faster promotion. That was a different Visa type and I earned the bonus miles no problem. I assumed that I was done, though.

The current terms and conditions make clear that the Visa Signature is a different product, and so I should be able to earn bonus miles again. The offer for that card is 15,000 miles with first use and the annual fee is $90. I’ll likely use the offer in June, provided that Northwest reintroduces its Fly Free Faster promotion — 15,000 miles for the card, 10,000 miles from that promotion (along with a couple of small mile transfers into my Northwest account and/or purchases from the Northwest mall) will make for a pretty good deal.