The chronological list of the 100 "must-haves" making up The Museum Collection book features the Hebdomas at number 4. The excerpt taken from the text points out that the estimate does not fully reflect the impact made by this watch on the general development of technique.
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The long runner
Though significant as the earliest long-running wristwatch, the
Hebdomas is reasonably priced and therefore affordable for most
collectors. Its availability is however on the low side.
Overall condition report* 8/10
Price estimate* EUR 1,000-1,500
*only refer to the illustrated example