This is a vintage 1927 - 1932 set of 6 connecting rods, 6 big-end bearings and 6 pistons from an Alfa Romeo 6C 1900.
The conrods and bearings will fit all three models, the pistons are for the 1900 but can be machined down to fit the 6C1750 as well but won't fit the 1500.
I acquired this set from a 6C1900 owner who is extensively modifying his engine and sold this set to fund the modifications.
Please note that this is ONLY available as a set (it won't be broken up!) and that I preferably would sell this of a 6C1500 / 6C1750 / 6C1900 owner to keep his (or her!) car running.
The 6C series was of course extensively raced under leadership of a young Enzo Ferrari.
Only 1 set available.