SInce September 2020 the Royal Mint has offered 3rd Party Certified Coins (aka Slabs)
See this Coin Week article
And so Safe Albums (UK) Ltd has pleasure in offering these choices for safe storage of your slabbed coins.
For 6 slabs. For aluminum coin case no. 176 SP.
for 8 slabs!
For 8 Slabs. For Cases SAFE 258, 188 und 288.
Outside dimensions: 325 x 230 mm