Frame Numbering
If you would like to add your frame to our register, please send all communications to info@mkm-cycles.co.uk
This is a listing of known frame numbers at January 2024
(*We hopefully have added all frame numbers submitted so far… please let me know if I’ve missed any)
6, 12, 13, 44, 122, 134, 161, 171, 193, 222, 235, 242, 338, 477, 543, 554, 557, 736, 760, 803, 823 ,0879 ,904
1134, 1279, 1356, 1361, 1461 ,1503, 1504, 1584, 1605, 1772, 1782, 1823, 1829, 1847, 1864, 1867, 1869, 1907, 1940, 1955, 1956
2002, 2007, 2011, 2079, 2145, 2158, 2175, 2235, 2289, 2312, 2323, 2381, 2382, 2459, 2462, 2467, 2504, 2508, 2524, 2528, 2555, 2557, 2611, 2626, 2631, 2687, 2737, 2757 , 2792, 2803, 2804, 2808, 2819, 2996
3057, 3069, 3091, 3095, 3108, 3110, 3160, 3179, 3182, 3196, 3198, 3546, 3572, 3579, 3637, 3644, 3652, 3678, 3681, 3685, 3694, 3700, 3709, 3875, 3878, 3887, 3915, 3923, 3932, 3951, 3974, 3989, 3993, 3999
4000, 4006, 4008, 4033, 4034, 4038, 4046 ,4060, 4105,4131, 4166, 4203, 4224, 4309, 4337, 4349, 4356, 4389,4484, 4527, 4544, 4547, 4556 , 4557, 4565, 4566, 4582, 4619, 4631, 4665, 4666, 4672,4801, 4809, 4810, 4818, 4842, 4847, 4872, 4932, 4996
5013, 5029, 5033, 5039, 5044 , 5071, 5093, 5123, 5129, 5130, 5137, 5158, 5161, 5185, 5280 ,5293, 5295, 5395, 5377, 5397, 5436, 5439, 5449, 5453, 5470, 5507, 5566, 5593, 5594, 5604, 5620, 5649, 5694, 5699, 5702, 5718, 5734, 5736, 5737, 5755, 5764, 5767, 5769, 5771, 5779, 5788,
5795 with engraved seat top eyes thought to be 1976 or later
5796, 5806, 5820, 5867, 5875, 5876, 5894, 5914, 5919, 5933, 5969, 5976
6012, 6013, 6023, 6035, 6051, 6053, 6065, 6069, 6075, 6091, 6098, 6107, 6123 known to be 1979, 6125, 6130, 6138, 6143, 6150, 6157, 6163, 6170
6184 known to be late 1979
6187, 6188, 6195, 6222, 6226, 6233, 6259, 6269, 6273, 6279, 6282, 6284, 6301, 6302, 6303 ,6311, 6312, 6335, 6370, 6371, 6373, 6398, 6406, 6410, 6415, 6433, 6443, 6453, 6469, 6475 , 6480, 6484, 6496, 6512, 6524, 6529, 6551, 6553, 6579, 6586, 6630?, 6638 ,6694, 6695, 6711, 6714, 6722, 6736, 6738, 6760, 6761, 6767, 6777, 6788, 6794, 6796, 6799, 6805, 6830
Liverpool built MKM’s
A81.40SL
Display / Photographic frame - O15
Ultimates -5377, 5788, 5855, 6097, 6188 ,6301, 6653, U5, U9, U11 - are these Steve Elsworth numbers?
Plus one without number in 531SL
Frame Identification
Most lugged MKMs were built with either Prugnat or Bocama lugs - see Richard Sachs website - for lug details - All Ultimates were lugless but are, of course, easily identifiable
Frame Dating
Assuming that production was spread evenly over the nine years of production with only four months production in 1972 and six months production in 1980 the average frames per month are 75 per month, this would give the following ranges per year :
1972 001 to 300
1973 300 to 1200
1974 1200 to 2100
1975 2100 to 3000
1976 3000 to 3900
1977 3900 to 4800
1978 4800 to 5700
1979 5700 to 6600 (5705 known to be early 1979, 6184 late 1979)
1980 6600 to 6805??
Identifying Frame Numbers
The easiest way to find your frame number is to turn your frame upside down and take a look on the underside of the bottom bracket.
The frame number should be clearly stamped into the bottom, usually following a 4-digit format without letters, unless early like the frame at the top of the page which is 3.
A matching set of numbers should also be stamped on the forks so please check those to ensure both match.
To add a frame to the MKM register (and hopefully the gallery too) we require the following details:
Frame number
Your approximate location (county, region, state or even country is plenty)
If you are the original owner or not, and a few details as to how you came to own your MKM
The following images make identifying and adding the frames that much easier:
Underside of frame bottom bracket (frame number)
Full bike / frame right hand side or left hand side
Close up of head tube
Close up of seat tube, including seat stays (essential)
Any features such as engravings
Finally, any extra's such as the drop outs or forks etc are always welcome and make identification that much easier!
Want to add your frame or need a bike identifying?
If you can't see your frame number on the register or would like to send in any images of your bike to be added to the gallery, please send your details to info@mkm-cycles.co.uk
All emails are answered, please check spam/junk folders if you think you have not received a reply