Does anybody know if Esterbrook fountain pens take "montblanc" size ink cartridges?

Best Regards

Pardon my asking, but are you going to ink that mint NOS set?
There are so many used Esterbrooks pens around that it seems a shame to ink a new pen. Please don't take offense, but I like to think that pens that have survived uninked for 50 years or so should be preserved in their unused state.
Nice set, nice color!

And to answer grab77 question, I think that unfortunately no present day cartridge fits nicely in a vintage Esterbrook pen. This brand used a propietary cartridge system and one should revert to refilling old cartridges to make use of these pens now.

Sorry for the bad news.

Ramón is correct. Esterbrook used proprietary ink cartridges; however, you could find empty Esterbrook carts and refill them with a syringe. You might want to check pendemonium.com and see if they have any emtpy Estie carts in stock.

That set looks like an M2 set, which had an aerometric convertor. Is there not one in the pen?

Best-
Brian