Dereu and Sons Manufacturing Company (aka Spy-Coins.com), who we have previously endorsed in this space, are having a sale.
The hollow spy nickel is on sale for $19.50 (plus shipping). Add it to your cart and use the discount keyword “springfever”.
The hollow spy Kennedy half-dollar (the 1971 to present version, not the 90% and 40% silver ones) is on sale for $16.25 (plus shipping). Use the discount keyword “fervent” at checkout.
I have no connection to the company except being a very satisfied customer who thinks their products are nifty. The sale ends May 3rd.