Just purchased an MFG 19.
Its a 1978 sail # 90.
The pins for the mast base are missing.
I have used 1/4" hardened bolts to temporarily rig at home.
Does anyone have pic of originals or a recommendation for what might work better?
I'm really not sure what the original pins were. The previous owner of my boat used carriage bolts. I have a friend who owns a machine shop who made me a set of stainless steel pins with an acorn head and holes for cotter pins. Cost was about $10 for the pair. It sounds like what you are using would suffice. I'll try to get a picture of my mast foot in the next few weeks(if my feeble mind can figure out how to post pictures!)