Technical Q (for Terry): What was the flush volume of a Toto Drake ST743E twenty years ago?

[KarenTheBold]

Terry, the toilet you voted out (in favor of the one-pc) is ready to leave the premises. Rather than having it go straight to the dump, I'm planning to list it on Freecycle, just in case.
To describe it accurately, I'd like to know what the flush volume is/was. The new ones are listed as 1.28g, but I'm wondering if mine is 1.6 gallons.
Can you help me out?

 

[Breplum]

It would have been 1.6gpf

 

[Sponsor]

 

[KarenTheBold]

It would have been 1.6gpf

Actually I just discovered that it was installed in 2009. Would it still be 1.6g? (The 1.28g standard came into being in CA in 2014.)

 

[KarenTheBold]

It would have been 1.6gpf

Actually I just discovered that it was installed in 2009. Would it still be 1.6g? (1.28g became the CA standard for new purchases in 2014--I'd be giving this away via FreeCycle.)

 

[Terry]

E = 1.28 gallons
S = 1.60 gallons
U = 1.0 gallons