Parker ceased production of Penman Sapphire in 2000 meaning that the bottle I have is at least 16 years old and probably older; that's more than half my age! I bought my bottle from a seller on eBay (and as of this writing he has another bottle up for sale). The ink is very well regarded and sort-after and the price certainly reflects that with prices upwards of $125 USD common. The price also dissuades many from getting the ink so alternatives are sought, and some, like Bungubox Sapphire, specifically mention that Parker Penman Sapphire was an inspiration for the ink. Brad Dowdy mentioned that Noodler's Baystate Blue, Private Reserve American Blue, and Diamine Majestic Blue come up as suitable substitutes but I've found in my testing that there are much better alternatives to Parker Penman Sapphire than these.
Read MoreDouble Ink Review: Bookbinders Emerald Boa and Eastern Brown
Bookbinders Snake Inks, from Bookbinders Online are, a series of, at the time of this writing, eight inks. Bookbinder's released these two in their initial release of four inks (the other two from the initial release being Red Belly Black and Everglades Ratsnake). Bookbinders Online are a Brisbane, Australia based company that also bind their own Tomoe River notebooks (the ones I use in these reviews). Emerald Boa is a light green ink and Eastern Brown is a warm brown both with distinct characteristics from each other.
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