That crank looks like a version of the Silstar on my World Sport I converted to single speed. If so, it has the obsolete 118 BCD on the small ring, some large BCD>151 on the large ring, and uses smaller diameter than standard chainring bolts. I used it for a the SS conversion by putting a larger 118 ring on the inside and ditching the outer ring. Had to drill out the boltholes, too, and use regular (double) bolts.

What make/model saddle is that?

I got about $8 total for a similar brakeset (calipers and levers). And I reused the hubs on the SS - actually spin really well with new g25 bearings.

Got a couple a bux for the pedals, and a couple for the stem shifters, too.

The freewheel went for about $5.