The complete guide to wearing a collar pin (and how a collar bar and collar clip are different) - Bespoke Edge
I'm obsessed with Howard's style. The club collar with the bar, the knit tie, the cuffs and collar matched, and the tie with the shirt too... It's such an extra outfit, but
Amazon.com: Mens Shirt Collar Pins Necktie Tie Cravat Pin Clips with Chain Lapel Pin Collar Bar Tassel Brooch Gold Silver Black Tone (Black Hat Head Pin): Clothing, Shoes & Jewelry
Are Collar Bars Old Fashioned? | OTAA
Men Silver Gold Shirt Collar Clip Bar Lapel Pin Chain Tie Brooch Necktie Stick | eBay