Photo	Generation	Molds	BottomStyle	InsideRibStyle	MoldIdentificationLayout	PatPendLayout	PatPendStyle	StudLogoStyle	MoldPositionStyle	StudRecessStyle	MoldPositionLayout
	11 - Tubeless - No logo inside - corner pip	2	None	Across	None	None	None	Wide Straight 'O'	None	Large sloped (3mm)	None
	21 - Old logo - 3mm stud recess - corner-pip	4	Tubes Without Cross-support	None	None	Top+Bottom (centered)	Normal	Wide Straight 'O'	Typed	Large (3mm)	Right (Top To Bottom)
	23 - Old logo - smaller stud recess - corner-pip - no mold-id	6	Tubes Without Cross-support	None	None	None	None	Wide Straight 'O'	None	Small (2-2,2mm)	None
	31 - Old logo - 1x2 with mold identifiers	3	None	None	Center	None	None	Wide Round 'O'	Typed	Small (2-2,2mm)	Center (Top To Bottom)

11 - Tubeless - No logo inside - corner pip (1956-1957)

Photo	CatId	Mold	Members	MoldPositionLayout	MoldPositionStyle	StudRecessStyle	Associations
	11c	Unnumbered - sloped stud recesses	2 / 22	None	None	Large sloped (3mm)
	11x	1x2 Small stud recesses	3 / 24	Center (Top To Bottom)	Typed	Small (2-2,2mm)

21 - Old logo - 3mm stud recess - corner-pip (1958-1959)

Photo	CatId	Mold	Members	BottomStyle	MoldPositionLayout	PatPendLayout	PatPendStyle	Associations
	21ah	1x2 - Mold #2 Stud logo along - opposite pip positions	7 / 28	None	Center (Top To Bottom)	None	None	23t (Matching patterns, but with different stud-sizes)
	21ai	1x2 - Mold #3 Stud logo across - without relation to gen 23	2 / 48	None	Center (Top To Bottom)	None	None
	21t	2x2 Pip top/bottom - rounded tube edge	4 / 22	Tubes Without Cross-support	Right (Top To Bottom)	Top+Bottom (centered)	Normal
	21w	2x2 pip top - horizontal logo	1 / 2	Tubes Without Cross-support	Right (Top To Bottom)	Top+Bottom (centered)	Normal	21v (Matching bottom pattern - top rotated (pip + logo))

23 - Old logo - smaller stud recess - corner-pip - no mold-id (1958-1959)

Photo	CatId	Mold	Members	BottomStyle	InsideRibStyle	MoldPositionLayout	MoldPositionStyle	PatPendStyle	Associations
	23ag	1x2 - Mold #8 Stud logo across - related to 21ai	1 / 2	None	Across	Center (Top To Bottom)	Typed	None
	23s	2x2 and 2x3 - without pat.pend/mold-id	1 / 8	Tubes Without Cross-support	None	None	None	None
	23t	1x2 - Mold #1 Stud logo along - evolution from 21ah	7 / 28	None	None	Center (Top To Bottom)	Typed	Normal	21ah (Matching patterns, but with different stud-sizes)
	23v	1x2 - Mold #3 Stud logo across - with relation to gen 21	1 / 48	None	None	Center (Top To Bottom)	Typed	None
	23w	1x2 - Mold #4 Stud logo across - without relation to gen 21	8 / 48	None	None	Center (Top To Bottom)	Typed	None
	23x	1x2 - Mold #5 Stud logo across - without relation to gen 21 #2	3 / 11	None	None	Center (Top To Bottom)	Typed	None

31 - Old logo - 1x2 with mold identifiers (1960-1965)

Photo	CatId	Mold	Members	MoldIdentificationLayout	PatPendLayout	PatPendStyle	StudLogoStyle	Associations
	31d1	1x2 - D-mold	12 / 52	Center	None	None	Wide Round 'O'
	31e1	1x2 - E-mold	28 / 52	Center	None	None	Wide Round 'O'	31e2 (Rotated 180 deg.)
	31itl	1x2 - ITL-mold	1 / 4	Left (Top To Bottom)	Right	Small	Wide Straight 'O'