What speakers have you mistakenly let go and then later repurchased?

Well I never repurchased a set of speakers but I should have kept the Acoustat 2+2s, for my living room (secondary listening room) from 35 years ago.  Sold them very cheap.

@fredapplegate I get your point but my new wife hated them because they lacked bass punch/depth, extremely beamy, a bright overall balance and limited dynamics.   This in a 540 sq. ft. room.  This was 25 years ago.  I replaced them with dynamic speakers and she was ecstatic over the choice.   

I had Advents, Dynaco 25, 35 & 50, ADS 620, all of which are long retired/gone (40+ years).  I consider someone keeping the older set rather than repurchasing it satisfactory for this forum discussion.