The 145.022-68 is considered a Sub-Reference for it is a transitional or hybrid model. It has the new 861 movement but still retains the dial of the 321 movement with the applied metal logo and the main hour markers going through the minutes track. This reference was in production for a short period of time between end of 1968 and the end of 1969. It is also the first reference with the chronograph hand having a flat counterweight became generalized. 

Serial: 26,5XX,XXX

Date: 1969 February

Case Reference: 145.022 – 68 ST

Dial: Applied Logo, Spaced T - Lume missing at 5 o'clock

Hands: Correct Flat Baton Hands with matching lume - hands intact with little to no deterioration of lume

Case: Asymmetrical – Twisted Lugs - Unpolished

Bezel: Dot Diagonal to 70/Dot over 90 – gash at 3 - marks throughout

Bracelet: 1039 Clasp Code with 516 end links

Caseback: Speedmaster in Center with single bevel, stamped 145022- 68 ST

Crown: Narrow Angled Feet - 70's crown

Pushers: Bottom pusher is correct Type 4 Wide and Tall - Top pusher is incorrect Wide and short

Movement: 861 Copper - Steel Brake - 2 s/d 207 Amp

Glass: Hesalite

Condition:

Case is in great unpolished condition with no notable marks. Bracelet has stretch and has wear. Bezel has a small gash at 3 and marks throughout. Dial is in great shape with lume missing at 5. Hands are in great shape all around. No service history but running  2 s/d 207 Amp.