What are these off?

[toglhot]

These came as spares with my 74 TX650, they are slightly different from the carbs that were on the bike. I've never used them, just cleaned them up. Diaphragms are shot and a couple of bits are missing, otherwise they're in pretty good nick. They are 38s.

 

[650Skull]

Look to be 74-75 carb. Bit hard to see in your pics if the floor i raised or not. If not they ate 74/75 if they have, then they are earlier carbs but where the throttle cable connect to the throttle it is a ring type where the earlier, (up to 72 from what i know), is a claw type.
From gggGary's 72 mystery carbs

My 74TXA carb