Hamilton Intra-Matic Auto Chrono H38416711

Imagen: Hamilton, web oficial

The storyWhy this reference matters

In 1968 Hamilton put a two-register chronograph on sale in two flavours: the Chronograph A, white dial with black registers, what we would now call a panda, and the Chronograph B, with the colours reversed. Both measured 36 mm and were automatic. The part that has aged worst is the tachymetre scale on those originals, black on black and running on a non-linear progression up to absurd figures. More a period gesture than a usable tool.

This Intra-Matic Auto Chrono, launched in 2018, comes straight from the A. Hamilton took it from 36 to 40 mm, about the minimum for a modern chronograph not to look like a toy, and left the rest alone: the two registers facing each other across the horizontal, the black tachymetre ring framing the light dial, applied markers and a discreet date at six. No commemorative logos, no invented numbering. This is reissue restraint done properly.

Inside is the H-31, an ETA Valjoux 7753 reworked with the reserve stretched to sixty hours, well beyond what that family usually manages. That it is a 7753 and not the celebrated 7750 is no accident. The 7753 puts the registers on the horizontal axis, at three and nine, while the 7750 stacks them vertically. Without that change of architecture, the 1968 dial simply could not have been repeated.

SpecificationsThe numbers, in one table

IdentificationHow to tell it apart

The H38416711 is the white dial with black registers, the panda configuration. Its inverted twin is the H38716731, black dial with light registers, heir to the Chronograph B. Both are 40 mm and share the calibre, so the dial colour and the reference engraved on the case back are all that really separates them.

To avoid confusing it with the Intra-Matic 68 limited series: that was a numbered edition of 1,968 pieces and a larger diameter. This one is regular production and carries no number. If a seller talks about a numbered piece and cannot show you the number engraved on the back, that is reason enough to be wary before you look at anything else.

Awkward but real measurements: 14.45 mm thick over a 40 mm diameter. It is a chronograph that looks slim and is not, for two reasons. The movement, because the 7750 family is tall, and the screw-down crown. Lugs are 20 mm, the crystal is sapphire with anti-reflective coating, and it takes 10 bar, an unusual figure on a reissue with vintage manners.

CollectingWhat collectors check

The first thing I would check is the chronograph, not the watch. Start it, stop it and reset it several times over. The register hands should come back exactly to zero, not a hair short. An imprecise reset means the hammers are out of adjustment, and on an automatic chronograph that workshop bill is neither small nor quick to settle.

Then the crown. It screws down, so it should go in with no odd resistance and sit flat against the case. Forced threads are the commonest single reason a chronograph rated at a hundred metres ends up with moisture inside. Test the pushers too: short travel, firm, with a definite click. If they sink softly or need pressing twice, there is wear in the mechanism.

On value, this is one of the Hamiltons that holds up best, because it is not an invented homage. The 1968 original it resembles actually exists, and that gives the model some depth. What takes value off is predictable: a repolished case with rounded lugs, a replacement crystal without the anti-reflective coating, or a strap that is not the original black leather. On their own none is fatal. Together, they are.

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Close relativesThe ones it gets confused with