I've got two 266Mhz G3 Beige motherboards for sale. Both have ROMS but no voltage regulators (You'll need a Raytheon branded for most 500Mhz+ cpu upgrades). Prices are USD. Shipping will be more outside US. Both were working when pulled a year ago, that said all sales are final.
Both should also fit All In One Macs. Below is the simple rundown. Mobo's shipped in US in flat-rate boxes and in anti-static bags.
64MB (2x32MB sticks)
Clocked with white jumper block to 266Mhz but the CPU I believe is a 275Mhz as the decal says XPC750FIP275CF
I'd prefer PayPal but will also accept Money Orders. PM me as to email address for PayPal account. First come first serve.