The current batch of capacitors I am selling has 28W32L codes on them, and the boxes are dated 2234, so these were made the 34th week of 2022.
A note about installation:
Main filter capacitors are usually used to provide the positive and negative rails to the amplifier section, so one of them will appear to be wired backwards (with positive to chassis ground). This is normal. Before you replace your capacitors, take some clear pictures of the wiring so you will know how to connect the new ones. If your equipment starts blowing fuses after replacing the main filter capacitors, you probably wired one backwards.