A bike that I always regretted selling was a Powerlite 26" BMZ cruiser. I bought the frame for $50 from the trunk of the dear departed Steve Nachman; a bike parts sales rep who plied the mid-Atlantic region from the late 70's through the 90s. It was built up w/ all red stuff: Tuff Neck, Sunshine hubs, Araya 7X rims, Dia Compe brakes, you know. All that stuff.
I sold it along with a spectacular individual pursuit specific chrome Cinelli track bike that had been used by the Italian olympic team in 1976 to buy a brand new custom Ludwig maple superclassic drum set in 1982. I didn't regret the sale 'til years later.
I started idly looking at 26" cruisers maybe 5 years ago. They'd already gotten pretty expensive by then. OM flyers, SEs, all well over $1k.
Then one day I was talking with an old bike shop associate from back in the day and mentioned for him to keep his eyes open for a '26. "How about my GT?" he said.
I ended up swapping a 1/2 a van full of SOHC Honda CB750 stuff. 1 bike and a heap of parts. I'd paid maybe $250 for the lot.
The GT cleaned up beautifully. It's got OMAS high flange hubs, black Ukai rims, and a 180mm Campagnolo Nuovo Record crankset. I don't ride it alot, but it makes me smile everytime I see it.
Yes I'll post pics later....