Vintage Heuer Monaco Reference 73633 - Gray / Black 1970s

Thanks to Jeff

Price - asking $7,250 net to me
Full pics here - https://imgur.com/a/mVucWKQ

Movement - 3-register, Valjoux 7736 Manuel wind movement
Hands - All original brushed steel, with red and luminous inserts, triangular red tips
Dial - All-original grey dial and black registers, with lovely patina around the original gasket leakage (imo)
Case - 40mm minty sharp steel case (this was a safe-queen), ref 73633G, casebook showing 1133 clearly. Serial - re 1971-72 range
Crystal - seem original, with light scratching
Service history unknown- but seems to run well.

MONACO
17-jewel Valjoux 7736 manual wind movement, slate grey dial with three black subsidiary dials for running seconds, 30 minute and 12 hour recording, dial signed Monaco Heuer, steel hands with luminous inserts and red tips, red chronograph hand, varied baton indexes for the hours, white outer 1/5th seconds scale, polished and brushed finish square case with special snap down case back, original black leather Heuer strap with steel Heuer buckle, case, dial and movement signed 40mm.
Footnotes

The Monaco model line included automatic and hand-wound versions. With the classy three registers, the deletion of the date, the hand-wound models offer a striking dial design. An important running second hand at 9 o'clock was added for the racing crowd. The Monaco with the reference 73633 G was first shown in the 1970/71 Heuer catalogue. Powered by the Valjoux 7736 movements, the grey dial version was reference 73633 G and reference number codes include an indication of the movement similar to the automatic Monaco. Serial and reference numbers are engraved between the lugs and Heuer Tool No.033 is marked on the case back. The 73633 manual wind case has the same dimensions as the automatic Monaco reference 1133 and the crown is back at its classic manual wind position between the fluted chronograph pushers.