Harp specification on Taylor cards was not always put on orders by Taylor salesmen.
I guess they just took orders and left T's or Harp up to whoever was running the hot stamp machine. Although it was on some, I wrote Harp or T's on many of the records that I knew was Harps or T's after we bought a copy of the records.
Some orders and reorders were mixed T's and Harps. Sometimes on order cards sometimes not.

Although the blue BC is not on the card, I suspect it was a reorder. Not all reorders made the cards for some reason. I have a number of colors not on the Taylor and Mason cards.