Cuban Tax Stamps

I was going through some old stuff in one of my boxes and came across this interesting (to me) item.
The item shown in first scan is that of a used Southern Pacific Steamship line, aboard the SS Chalmette from Havana to New Orleans, for passage in one First Cabin room. The top appears to be torn off as part of the steward ticket taking actions.....





I am also a collector of Southern Pacific RR materials, so this was a great addition to my collection.

Now, on the reverse side, as shown in the next scan are 6 Cuban Revenue "National Tax" stamps. There appear to have more, but the steward got those. I did a quick look in my Scotts Catalog under Cuba, but could not find these particular items. Anyone know the catalog number for them? Anyway, enjoy these. They are something that one (me) doesn't see a lot of. They were cancelled on April 13, 1923.







Thoughts?

Good afternoon PoStat4evR
I found a small group of these in an old collection a while back, all unused and all rouletted like yours:- a 1c green, 2c red, 10c orange and a pair of the 5c blue. Was wondering when they dated from - now I know!
DavidR