Japanese Sonic the Hedgehog pins, patches and buttons. There has been a great, and mostly quite cute, selection of little metal and enamel pins and embroidered patches for clothing. Sometimes the pins were produced individually, but mostly they came in collections or sets, sometimes boxed. The patches are highly collectible. There are special clear plastic "Patch Organizers" which have many pockets and can be placed on your wall for display.
Sonic Gear Main Page * Japan Pins Patches 1 *
Sonic Soccer & Tails Flag Pin Set Promo Here is a pair of pins that were sold/given away together. They are uncommon enamel & metal pins. Sonic is shown with a soccer football, and Japanese styled classic Tails is standing in front of a flag. But which country has that flag? Is it Ethiopia? (color looks a bit off, is it red/yellow/green or orange/yellow/green?) It could be that the pin faded or yellowed over time. This was apparently released with Sonic Spinball in Japan. It could have been a bonus or pre-order item. It was clearly shown in a commercial.
Ethiopia is a country in Africa that has a lot of problems for a long time. It is highly unlikely that they made any sort of pin due to the struggle of the country.So why would Japan make an Ethiopia flag pin for itself? This makes the mystery even more strange. Ethiopia flag data by: Encas

You can see the pins being advertised at about 2:58 in this commercial video compilation: Japanese Sonic Game Ads, at youtube. Commercial info by: AskLiliumLily

Super Sonic Vintage Expensive Pin This is the ONLY known classic metal Super Sonic pin. It's a silvertone metal & enamel pin. It uses one of the few classic arts of actual Super Sonic, & as you can see here was actually (interestingly enough) made by Sony Products, but produced for Sega. Note the "Segasonic" header on its plastic card. In 2013, someone tried to sell it on ebay for 541 dollars, but FAILED when they wanted even MORE money for it than was offered! It's an outrageously pricey pin.
Sitting Tails Rare Cute Pin This super cute sitting Tails pin is QUITE uncommon. The pose itself is extremely seldom used, despite how fun it is. The rare pose & cute art combine to make this a sought-after pin. Its' an enamel covered overlay on goldtone metal. The goldtone itself is also not nearly as common as silvertone, which helps make it unusual. It would look great 'perched' on the edge of a pocket, as Tails is waving hello. If you can even find this, expect high prices.
Metal Soccer Football Red Big Pin Button Here is a metal pin button that's fairly large. It's likely over or about 2 inches across & made of a thin sheet of metal curved at the edge so it's not sharp. It looks like it's been stained red/black with metal-compatible ink to create the design. It's designed like a soccer football with red & black pentagon pattern. In the central black pannel is the "Just the eyes & nose" Sonic design that was really popular for a while on merchandise in Japan. Here, the pin is still new in its package. This could have been a give-away or a UFO type prize because the package is plain/not really for display looking. @JapanAnimePosters on Instagram
Nights & Sonic 3 Pins Pack This pin pack needs more information.
This is a simple carded package of 3 of the same gold-tone round metal pin. It has a star-ring edge & Sonic's face on the front. The confusing part is why the package is labeled "Segasonic & NiGHTS" NiGHTS came out quite "late" in terms of when the 'segasonic' branding was dropped. Then, what do the pins actually have to do with NiGHTS? Aside from the packaging, there seems to be no relation? And why 3 of the same pin? The back looks like it has info, but it's all in Japanese. Write in for credit if you know any details. discovered by @JapanAnimePosters on Instagram.
Wonder Fest 2017 Flat Metals Pins? Probably.
Here are some silver-tone (likely steel or aluminum) flat metal items with raised details. These are from Wonder Fest in Japan in 2017. These are likely booth prizes of some sort, or some kind of convention exclusive. Texture & raised surfaces are used here to show the details of the design. There are 2 emblems from either an anime or a video game (wing knight skull, unicorn face with hair) and also SA1's "Circle Sonic" where he was walking with his hands in odd/twisted positions that you don't commonly see. What are these actually, and how were they obtained? Photo discovered by Taaron.
Heroes 3 Pin Badges Here is a set of 3 pin badges for Sonic Heroes. It's called the "Team Sonic Can Badge Set". (Why 'can'?) Each pin has the Japanese Heroes logo on it & a CG of the character. There's a Tails, Sonic & Knuckles one.
These were a limited-quantity bonus item for the game, part of a bonus called the "Heroes Pack" which also has 3 bags (also seen on SonicGear) which use the sihlouettes of these poses for their design. Because they're limited, they're also uncommon. Photo & owned by: Jalen Castillo