Most likely real. Enjoy them.

I just imputted the serial number into the Titleist website and unfortunately is not recognized. Sorry!

If they were ordered, Titleist can tell you the build specs based on the serial number.
Rule of thumb for future - check first, buy second.

Well, I doubt that a counterfeiting program would say “assembled in China” if Titleist did not assemble there. No reason for truth in advertising in that racket. All US deliveries are assembled in the US. My gen 3 heads are from Vietnam.

I see quite a bit of merchandise from Canada (…maybe) on eBay that always seems a little odd. Never bought any.

You should be able to verify with the golf club that they are the actual vendor and that they are willing to warranty the authenticity, if not the actual chain of custody of custody. Maybe someone from Canada can verify if clubs sold there are assembled in the US or China. If the set is located in Canada. You didn’t include your location in your profile so I’m only guessing your Kiijii is in Canada. If not in the US or Canada, then you’ll need a more local response.

Should be legit especially if you got it from a golf course. Register the club here on the website.

REGISTRATION NUMBERS FOR GOLF CLUBS
See below for the location of registration numbers for all Titleist golf clubs. If the product you are registering does not have a registration number, please enter the product's style number or provide a short description of the product.


Drivers - Hosel
Fairways - Hosel
Utilities - Hosel
Stock irons - 6 Iron Hosel

***** If you "have not" tried to registered it below under "product registration" you might consider calling Titleist regarding this set of irons. Stock irons would normally have the serial number on the six iron.