These are nice cues but they are not Custom Helmstetter cues, they are production cues. The cue was made in the 1990's, even though it says that the cue is a 87-7, this is not the year it is the cues series.
Below I have posted the Original catalog with the retail price listing when it was made.
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If the cue is straight, it is worth around $200, this is because Helmstetter Production cues were made in Japan. It also has to do with the fact that there is no Collector interest, which I do not agree with at all. The cues are great hitting cues in my opinion, and if I were you I would use it as a player.