Pentax's screw-mount SLR — the H3v, the SV sold as Honeywell in the US, screw mount, 1962.
The Pentax H3v of 1962 was the US Honeywell-branded version of the SV, sold under the H prefix in that market. Mechanically it is the SV, with its self-timer and automatic-reset frame counter. It belongs to the mature end of the all-mechanical screw-mount Pentax line before the Spotmatic.
This is a 35mm film SLR using the screw lens mount that became the M42 standard, taking Asahi's screw-thread lenses. It has a horizontal cloth focal-plane shutter and a fixed eye-level pentaprism with an instant-return mirror, a self-timer and an automatic-reset frame counter. There is no built-in meter, so exposure is set by hand, and the body is fully mechanical, firing without a battery. A clip-on external meter was available as a period accessory.
The H3v suits collectors, students, travellers and photographers who want a well-equipped all-mechanical screw-mount Pentax with a self-timer and clear finder. It handles like the SV and needs a separate meter or experience for exposure. It is a capable, dependable body for considered work, with the Honeywell branding of interest to collectors.
As an early-1960s body, condition is key. Check the cloth shutter for pinholes and even travel, testing slow speeds and the self-timer for stickiness. There is no meter or battery here. Inspect the pentaprism and finder for desilvering, haze or fungus. Test the advance and rewind for smooth movement. Clean, working screw-mount lenses determine practical usability.