In the past I have shown my Pentel Roller Ball collection. Most of them were from the 70s and up to the early 80s. These pens here are newer. The fourteen on the left side are rollers and the nine on the right are ball points. On the left we start with the P300, 3 each SP 308s, green SR 300, SR 10, Disney pen with no model number, black and blue R-4s (New versions of the original R-4s), Pentel Sign Pen, current version of the Excalibur, pentel k611, R-50 roller and the Super-fine Pentel SF 70. On the right you have the RC 20 clicroller, RC 26 clicroller, Disney RC 36 clicroller, Graphgear 1000 .05 mm Pen, Graphgear 1000 .07 mm Pen, B1000 Ball Pen, BR 607 Selfit, Energel multi pen, and the HP 803 Super 8. I will say this about the roller ball pens, my other collection of R3s through Excalibur's from the 70s and up to the 84 Olympics are much better made then the current group of SR rollers ( original R-4 is better then the newer R-4 in the picture). The good ones seem to have stopped after the 84 Olympics when pentel changed design. Still, all should be in your collection.