There are two basic types of column grommets; oblong and round. The round ones first appeared at the time of the series 2 1750 introduction. Of the 3 different oblong grommets I found, one was for the Spider 1600, another for all sedans (including TI, Super, Berlina, etc.) and the third for everything else.
From the parts books drawings, it's impossible to tell what the Spider 1600 grommet looks like. However, the grommet in your second pic is a dead ringer for the sedan grommet. The clue here is not where the hole is but the slightly raised portion of rubber around the hole. The pic is the grommet from our S1 1750 which is the same part number as yours. The slight difference in the hole location from yours might be explained by production differences in the retainer hole locations and/or column alignment when assembled.
BTW, where did you ever find a new oblong column grommet?
