Book: Horological Times March 1988: Understand the Pendulum Clock Part 2, Antique Watch Restoration Part XXVII, the Mainspring and its Barrel - American Watchmakers Institute

Book: Bulletin of the National Association of Watch and Clock Collectors, Inc. Vol. XXIII, No. 5, October 1981, Whole Number 214 - National Association of Watch and Clock Collectors, Inc.

Watch: Stuhrling Original Mens 324.335657 Special Reserve Emperor VT Automatic Skeleton Dual Time Black Watch - Stuhrling Original

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