The first game that I sold from my collection was Bally Spectrum.
Spectrum was actually the 3rd pin that I ever bought,
got it at an coin-op auction near Sacramento CA.
What drew me to the game was the PF lightshow attract mode.
But after having it for about a year, I sold it at auction in Orange county,
for about same price that I bought it for.
Never really got into the game, as it seemed that no matter how well I played,
I always seemed to get the same score, about 900,000.
Game seemed to be playing me, instead of me playing the game.
A difficult game to master.
Also at the time I had about a dozen games in my growing collection
and I was getting strapped for room,
this was before my addiction got out of control.
Though soon after I sold it, I regretted it, especially since the game is kinda rare.
Ended up finding another about 10 yrs later in slightly better condition,
acquired in a trade with a pinball buddy.
Swapped it for spare BLY Frontier that I had.