Reference:16570: Difference between revisions

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The reference has not seen the kind of auction-level escalation that lifted the 5-digit Submariner or Daytona vintage references over the last decade. Phillips catalog attention has run toward earlier Explorer II lots — the 1655 carries the lot essays — while Sotheby's and Bonhams carry the 16570 auction record. That pattern suggests the 16570 still has market room as a watch that earned its reputation slowly and is only now drawing sustained collector attention as the earliest examples cross the thirty-year mark.

~~==Still open==~~

The internal Mark generation system on 16570 dials has not been formalized to the level that <code>1016</code> or <code>5513</code> collectors can assume. Font-spacing and printing-density sub-variants exist across the run and have been documented on community threads, but the taxonomy has not converged on a single collector nomenclature. The F-serial 2003–2005 font-spacing sub-variant is the most frequently cited; others remain loose observations. Service-dial identification beyond the obvious tritium-plus-<code>SWISS MADE</code> mismatch is thin in editorial sources and sits mainly in forum threads. The 316L-to-904L case alloy transition is undocumented at the serial level. The exact Swiss-only window opens and closes across a period that different sources anchor to different months of 1998 and 1999. Each of those is an open question rather than a settled rule and should be treated as such on any specific example.

==Sources==

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 The reference has not seen the kind of auction-level escalation that lifted the 5-digit Submariner or Daytona vintage references over the last decade. Phillips catalog attention has run toward earlier Explorer II lots — the 1655 carries the lot essays — while Sotheby's and Bonhams carry the 16570 auction record. That pattern suggests the 16570 still has market room as a watch that earned its reputation slowly and is only now drawing sustained collector attention as the earliest examples cross the thirty-year mark.
-==Still open==
-The internal Mark generation system on 16570 dials has not been formalized to the level that <code>1016</code> or <code>5513</code> collectors can assume. Font-spacing and printing-density sub-variants exist across the run and have been documented on community threads, but the taxonomy has not converged on a single collector nomenclature. The F-serial 2003–2005 font-spacing sub-variant is the most frequently cited; others remain loose observations. Service-dial identification beyond the obvious tritium-plus-<code>SWISS MADE</code> mismatch is thin in editorial sources and sits mainly in forum threads. The 316L-to-904L case alloy transition is undocumented at the serial level. The exact Swiss-only window opens and closes across a period that different sources anchor to different months of 1998 and 1999. Each of those is an open question rather than a settled rule and should be treated as such on any specific example.
 ==Sources==