Our 1943 Double End boat has steel tacks, serial number 137321. According to the build sheet it was planked on March 31, 1943 so at least on that day they were using steel tacks. When we restored it I added at least one new brass tack through every plank and rib even though the steel tacks appeared to be in decent condition. The rest of the hardware on the boat, bolts, painter rings, stem bands etc are brass and original to the boat. The seats are spruce planks, Double End boats did not have caned seats so there was no need to substitute slat seats for cane on this one. Pictures of "Stephanie Lynn" can be easily found using the search box above.