I have an old Necchi BF Mira series serial # 18055 with spec # 300 and I am trying to find out how old it is and what it is worth. could you help me with this

The manual is $4.99.

https://manualsoncd.com/product/necchi-bu-sewing-machine-instruction-manual/

This says Free

https://millardsewing.com/product/necchi-model-bu-mira-instruction-manual-free-download/

How To Date A Necchi Sewing Machine - SewingFeed

sewingfeed.com https://sewingfeed.com > how-to-date-a-necchi-sewing...
Mar 6, 2023 - The easiest way to date a Necchi sewing machine is by identifying the model you have and then researching what year it was made in Necchi brand ...

‎Where Is Serial Number On... · ‎Where is the model number on...

How Old Is My Necchi Sewing Machine? (Vintage ...

SewingIsCool.com https://sewingiscool.com > how-old-is-my-necchi-sewi...
Finding the age of the Necchi sewing machine that you personally own doesn't take too much effort. You need the serial number and possibly the model number.

Necchi Sewing Machine Serial Numbers ' Peatix

Peatix https://necchi-sewing-machine-serial-numbers269.peatix.com The BU is a flat bed machine with an oscillating hook and manual zig zag (which I believe means you select zig zag by shifting the stitch width lever rather ...

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Hi Mercedes, The link below is a FREE 93 page instructions for servicing necchi sewing machines, I hope this helps.......CHEERS..
http://freenecchisewingmachinefiles.weebly.com/uploads/1/8/7/3/18731174/necchi_service_manual_bu-bf_nova-mira.pdf

You can go purchase one on line at Sewingpartsonline.com for $35.95 or your local sewing machine store should have. Sometimes ou can find them at Walmart also.

Necchi BF is a straight stitch machine
Necchi BU is zig zag machine
Necchi BU Supernova had cams for additional stitches

Most service shops will have the foot. You need to bring the machine to the shop so they can find the correct foot.

The bobbin cover could be next to impossible to find, you can make do with a cut and fitted piece of Masonite and some tape.

You can purchase that Necchi belt here:

http://www.sewingpartsdirect.com/12-5-8-universal-sewing-machine-lug-belt.aspx

Sheila,
I called the company which sells Necchi Machines and parts(Allyn)
in the States about the belts.Their Number is 800-525-9987. The parts department says Necchi used several different motors with differing motor mounts which means there is no standard motor belt for this model machine. The only way to get the right belt is to either take in the machine or the old belt to your repairman. More than likely he will have a Generic belt which will work.
sewman7

Bu Mira was made in Italy between 1952-1956 it was the machine where the introduced the Wonder Wheel to make decorative stitches, olive green in color . There are some people who collect them but like all antiques the rearer the are and the better origonal condition the are in the more the are worth.

http://www.sewusa.com/Threading_Diagrams/Threading_Pages/Necchi_Sewing_Machine_Threading/Necchi_BU_threading_Diagram.htm

this site has a picture