The later models have a larger focusing screen compared to the earlier models:
Later models are mainly 64mm*68mm
Later models include Rolleflex 3.5-E2, 3.5E-3, 2.8E-2, 2.5E-3, 3.5F, 2.8F, Tele, Magic, Magic II, Wide Angle, Rolleicord Vb, basically all these come with removable viewing hood.
The earlier models are mainly 56mm*64mm
The earlier models include Rolleiflex 3.5, 3.5E, 2.8 (A), 2.8 (C),
2.8 (D), 2.8 (E), Rolleicord III, IV, V, Va
Rolleiflex TLR (newer models)
Rolleiflex TLR (older models)
Rolleiflex SLX, SL66E, 6006-6008
havn’t seen one in such a good condition for year…
It is not difficult to find a Rolleiflex T in great condition. However, this piece on sale in ebay comes with the orignal seal… which is super rare.
Here is a link to the sale: